diff --git a/app/MindWork AI Studio/Dialogs/Settings/SettingsDialogChat.razor b/app/MindWork AI Studio/Dialogs/Settings/SettingsDialogChat.razor
index 1dd6b9d7..348f7a53 100644
--- a/app/MindWork AI Studio/Dialogs/Settings/SettingsDialogChat.razor	
+++ b/app/MindWork AI Studio/Dialogs/Settings/SettingsDialogChat.razor	
@@ -16,10 +16,10 @@
         <ConfigurationSelect OptionDescription="@T("Provider selection when loading a chat and sending assistant results to chat")" SelectedValue="@(() => this.SettingsManager.ConfigurationData.Chat.LoadingProviderBehavior)" Data="@ConfigurationSelectDataFactory.GetLoadingChatProviderBehavior()" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.Chat.LoadingProviderBehavior = selectedValue)" OptionHelp="@T("Control how the LLM provider for loaded chats is selected and when assistant results are sent to chat.")"/>
 
         <MudPaper Class="pa-3 mb-8 border-dashed border rounded-lg">
-            <ConfigurationOption OptionDescription="@T("Preselect chat options?")" LabelOn="@T("Chat options are preselected")" LabelOff="@T("No chat options are preselected")" State="@(() => this.SettingsManager.ConfigurationData.Chat.PreselectOptions)" StateUpdate="@(updatedState => this.SettingsManager.ConfigurationData.Chat.PreselectOptions = updatedState)" OptionHelp="@T("When enabled, you can preselect chat options. This is might be useful when you prefer a specific provider.")"/>
-            <ConfigurationProviderSelection Component="Components.CHAT" Data="@this.AvailableLLMProviders" Disabled="@(() => !this.SettingsManager.ConfigurationData.Chat.PreselectOptions)" SelectedValue="@(() => this.SettingsManager.ConfigurationData.Chat.PreselectedProvider)" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.Chat.PreselectedProvider = selectedValue)"/>
-            <ConfigurationSelect OptionDescription="@T("Preselect a profile")" Disabled="@(() => !this.SettingsManager.ConfigurationData.Chat.PreselectOptions)" SelectedValue="@(() => ProfilePreselection.FromStoredValue(this.SettingsManager.ConfigurationData.Chat.PreselectedProfile))" Data="@ConfigurationSelectDataFactory.GetComponentProfilesData(this.SettingsManager.ConfigurationData.Profiles)" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.Chat.PreselectedProfile = selectedValue)" OptionHelp="@T("Choose whether chats should use the app default profile, no profile, or a specific profile.")"/>
-            <ConfigurationSelect OptionDescription="@T("Preselect one of your chat templates?")" Disabled="@(() => !this.SettingsManager.ConfigurationData.Chat.PreselectOptions)" SelectedValue="@(() => this.SettingsManager.ConfigurationData.Chat.PreselectedChatTemplate)" Data="@ConfigurationSelectDataFactory.GetChatTemplatesData(this.SettingsManager.ConfigurationData.ChatTemplates)" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.Chat.PreselectedChatTemplate = selectedValue)" OptionHelp="@T("Would you like to set one of your chat templates as the default for chats?")"/>
+            <ConfigurationOption OptionDescription="@T("Preselect chat options?")" LabelOn="@T("Chat options are preselected")" LabelOff="@T("No chat options are preselected")" State="@(() => this.SettingsManager.ConfigurationData.Chat.PreselectOptions)" StateUpdate="@(updatedState => this.SettingsManager.ConfigurationData.Chat.PreselectOptions = updatedState)" OptionHelp="@T("When enabled, you can preselect chat options. This is might be useful when you prefer a specific provider.")" IsLocked="() => ManagedConfiguration.TryGet(x => x.Chat, x => x.PreselectOptions, out var meta) && meta.IsLocked"/>
+            <ConfigurationProviderSelection Component="Components.CHAT" Data="@this.AvailableLLMProviders" Disabled="@(() => !this.SettingsManager.ConfigurationData.Chat.PreselectOptions)" SelectedValue="@(() => this.SettingsManager.ConfigurationData.Chat.PreselectedProvider)" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.Chat.PreselectedProvider = selectedValue)" IsLocked="() => ManagedConfiguration.TryGet(x => x.Chat, x => x.PreselectedProvider, out var meta) && meta.IsLocked"/>
+            <ConfigurationSelect OptionDescription="@T("Preselect a profile")" Disabled="@(() => !this.SettingsManager.ConfigurationData.Chat.PreselectOptions)" SelectedValue="@(() => ProfilePreselection.FromStoredValue(this.SettingsManager.ConfigurationData.Chat.PreselectedProfile))" Data="@ConfigurationSelectDataFactory.GetComponentProfilesData(this.SettingsManager.ConfigurationData.Profiles)" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.Chat.PreselectedProfile = selectedValue)" OptionHelp="@T("Choose whether chats should use the app default profile, no profile, or a specific profile.")" IsLocked="() => ManagedConfiguration.TryGet(x => x.Chat, x => x.PreselectedProfile, out var meta) && meta.IsLocked"/>
+            <ConfigurationSelect OptionDescription="@T("Preselect one of your chat templates?")" Disabled="@(() => !this.SettingsManager.ConfigurationData.Chat.PreselectOptions)" SelectedValue="@(() => this.SettingsManager.ConfigurationData.Chat.PreselectedChatTemplate)" Data="@ConfigurationSelectDataFactory.GetChatTemplatesData(this.SettingsManager.ConfigurationData.ChatTemplates)" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.Chat.PreselectedChatTemplate = selectedValue)" OptionHelp="@T("Would you like to set one of your chat templates as the default for chats?")" IsLocked="() => ManagedConfiguration.TryGet(x => x.Chat, x => x.PreselectedChatTemplate, out var meta) && meta.IsLocked"/>
         </MudPaper>
 
         @if (PreviewFeatures.PRE_RAG_2024.IsEnabled(this.SettingsManager))
diff --git a/app/MindWork AI Studio/Plugins/configuration/plugin.lua b/app/MindWork AI Studio/Plugins/configuration/plugin.lua
index 46f05641..aa4241c7 100644
--- a/app/MindWork AI Studio/Plugins/configuration/plugin.lua	
+++ b/app/MindWork AI Studio/Plugins/configuration/plugin.lua	
@@ -238,6 +238,32 @@ CONFIG["SETTINGS"] = {}
 -- Please note: using an empty string ("") will lock the preselected profile selection, even though no valid preselected profile is found.
 -- CONFIG["SETTINGS"]["DataApp.PreselectedProfile"] = "00000000-0000-0000-0000-000000000000"
 
+-- Configure chat-specific preselected options.
+-- This must be enabled for the chat-specific provider, profile, and chat template to take effect.
+-- CONFIG["SETTINGS"]["DataChat.PreselectOptions"] = true
+--
+-- Configure the preselected provider for chats.
+-- It must be one of the provider IDs defined in CONFIG["LLM_PROVIDERS"].
+-- CONFIG["SETTINGS"]["DataChat.PreselectedProvider"] = "00000000-0000-0000-0000-000000000000"
+--
+-- Configure the preselected profile for chats.
+-- It must be one of the profile IDs defined in CONFIG["PROFILES"].
+-- Please note: using an empty string ("") means chats will use the app default profile.
+-- Please note: using "00000000-0000-0000-0000-000000000000" means chats will use no profile.
+-- CONFIG["SETTINGS"]["DataChat.PreselectedProfile"] = "00000000-0000-0000-0000-000000000000"
+--
+-- Configure the preselected chat template for chats.
+-- It must be one of the chat template IDs defined in CONFIG["CHAT_TEMPLATES"].
+-- Please note: using an empty string ("") or "00000000-0000-0000-0000-000000000000" means chats will use no chat template.
+-- CONFIG["SETTINGS"]["DataChat.PreselectedChatTemplate"] = "00000000-0000-0000-0000-000000000000"
+--
+-- Allow users to change any configured chat default locally.
+-- Allowed values are: true, false
+-- CONFIG["SETTINGS"]["DataChat.PreselectOptions.AllowUserOverride"] = true
+-- CONFIG["SETTINGS"]["DataChat.PreselectedProvider.AllowUserOverride"] = true
+-- CONFIG["SETTINGS"]["DataChat.PreselectedProfile.AllowUserOverride"] = true
+-- CONFIG["SETTINGS"]["DataChat.PreselectedChatTemplate.AllowUserOverride"] = true
+
 -- Configure the transcription provider for voice-to-text functionality.
 -- It must be one of the transcription provider IDs defined in CONFIG["TRANSCRIPTION_PROVIDERS"].
 -- Without a selected transcription provider, dictation and transcription features will be disabled.
diff --git a/app/MindWork AI Studio/Settings/DataModel/Data.cs b/app/MindWork AI Studio/Settings/DataModel/Data.cs
index 3a232017..07f9f9e2 100644
--- a/app/MindWork AI Studio/Settings/DataModel/Data.cs	
+++ b/app/MindWork AI Studio/Settings/DataModel/Data.cs	
@@ -105,7 +105,7 @@ public sealed class Data
 
     public DataApp App { get; init; } = new(x => x.App);
 
-    public DataChat Chat { get; init; } = new();
+    public DataChat Chat { get; init; } = new(x => x.Chat);
 
     public DataWorkspace Workspace { get; init; } = new();
 
diff --git a/app/MindWork AI Studio/Settings/DataModel/DataChat.cs b/app/MindWork AI Studio/Settings/DataModel/DataChat.cs
index 147bb7ac..f2a7ea37 100644
--- a/app/MindWork AI Studio/Settings/DataModel/DataChat.cs	
+++ b/app/MindWork AI Studio/Settings/DataModel/DataChat.cs	
@@ -1,7 +1,16 @@
+using System.Linq.Expressions;
+
 namespace AIStudio.Settings.DataModel;
 
-public sealed class DataChat
+public sealed class DataChat(Expression<Func<Data, DataChat>>? configSelection = null)
 {
+    /// <summary>
+    /// The default constructor for the JSON deserializer.
+    /// </summary>
+    public DataChat() : this(null)
+    {
+    }
+
     /// <summary>
     /// Shortcuts to send the input to the AI.
     /// </summary>
@@ -25,22 +34,22 @@ public sealed class DataChat
     /// <summary>
     /// Preselect any chat options?
     /// </summary>
-    public bool PreselectOptions { get; set; }
+    public bool PreselectOptions { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectOptions, false);
 
     /// <summary>
     /// Should we preselect a provider for the chat?
     /// </summary>
-    public string PreselectedProvider { get; set; } = string.Empty;
+    public string PreselectedProvider { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedProvider, string.Empty);
     
     /// <summary>
     /// Preselect a profile?
     /// </summary>
-    public string PreselectedProfile { get; set; } = string.Empty;
+    public string PreselectedProfile { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedProfile, string.Empty);
     
     /// <summary>
     /// Preselect a chat template?
     /// </summary>
-    public string PreselectedChatTemplate { get; set; } = string.Empty;
+    public string PreselectedChatTemplate { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedChatTemplate, string.Empty);
     
     /// <summary>
     /// Should we preselect data sources options for a created chat?
diff --git a/app/MindWork AI Studio/Tools/PluginSystem/PluginConfiguration.cs b/app/MindWork AI Studio/Tools/PluginSystem/PluginConfiguration.cs
index 3677c252..92634f7b 100644
--- a/app/MindWork AI Studio/Tools/PluginSystem/PluginConfiguration.cs	
+++ b/app/MindWork AI Studio/Tools/PluginSystem/PluginConfiguration.cs	
@@ -238,6 +238,12 @@ public sealed class PluginConfiguration(bool isInternal, LuaState state, PluginT
         // Config: preselected profile?
         ManagedConfiguration.TryProcessConfiguration(x => x.App, x => x.PreselectedProfile, Guid.Empty, this.Id, settingsTable, dryRun);
 
+        // Config: preselected chat options?
+        ManagedConfiguration.TryProcessConfiguration(x => x.Chat, x => x.PreselectOptions, this.Id, settingsTable, dryRun);
+        ManagedConfiguration.TryProcessConfiguration(x => x.Chat, x => x.PreselectedProvider, Guid.Empty, this.Id, settingsTable, dryRun);
+        ManagedConfiguration.TryProcessConfiguration(x => x.Chat, x => x.PreselectedProfile, this.Id, settingsTable, dryRun);
+        ManagedConfiguration.TryProcessConfiguration(x => x.Chat, x => x.PreselectedChatTemplate, this.Id, settingsTable, dryRun);
+
         // Config: transcription provider?
         ManagedConfiguration.TryProcessConfiguration(x => x.App, x => x.UseTranscriptionProvider, Guid.Empty, this.Id, settingsTable, dryRun);
 
diff --git a/app/MindWork AI Studio/Tools/PluginSystem/PluginFactory.Loading.cs b/app/MindWork AI Studio/Tools/PluginSystem/PluginFactory.Loading.cs
index c4d488c5..3f74c556 100644
--- a/app/MindWork AI Studio/Tools/PluginSystem/PluginFactory.Loading.cs	
+++ b/app/MindWork AI Studio/Tools/PluginSystem/PluginFactory.Loading.cs	
@@ -201,6 +201,19 @@ public static partial class PluginFactory
         // Check for a preselected profile:
         if(ManagedConfiguration.IsConfigurationLeftOver(x => x.App, x => x.PreselectedProfile, AVAILABLE_PLUGINS))
             wasConfigurationChanged = true;
+
+        // Check for preselected chat options:
+        if(ManagedConfiguration.IsConfigurationLeftOver(x => x.Chat, x => x.PreselectOptions, AVAILABLE_PLUGINS))
+            wasConfigurationChanged = true;
+
+        if(ManagedConfiguration.IsConfigurationLeftOver(x => x.Chat, x => x.PreselectedProvider, AVAILABLE_PLUGINS))
+            wasConfigurationChanged = true;
+
+        if(ManagedConfiguration.IsConfigurationLeftOver(x => x.Chat, x => x.PreselectedProfile, AVAILABLE_PLUGINS))
+            wasConfigurationChanged = true;
+
+        if(ManagedConfiguration.IsConfigurationLeftOver(x => x.Chat, x => x.PreselectedChatTemplate, AVAILABLE_PLUGINS))
+            wasConfigurationChanged = true;
         
         // Check for the update interval:
         if(ManagedConfiguration.IsConfigurationLeftOver(x => x.App, x => x.UpdateInterval, AVAILABLE_PLUGINS))
diff --git a/app/MindWork AI Studio/wwwroot/changelog/v26.6.2.md b/app/MindWork AI Studio/wwwroot/changelog/v26.6.2.md
index b606e448..d60f3390 100644
--- a/app/MindWork AI Studio/wwwroot/changelog/v26.6.2.md	
+++ b/app/MindWork AI Studio/wwwroot/changelog/v26.6.2.md	
@@ -1,5 +1,6 @@
 # v26.6.2, build 242 (2026-06-xx xx:xx UTC)
 - Added a read-only view for organization-managed profiles and chat templates, so users can inspect the content while the organization remains in control of changes.
+- Added support for organization-managed chat defaults. Configuration plugins can now preselect the chat provider, profile, and chat template, either as locked values or editable defaults.
 - Added support for organization-managed introduction texts on the home page. Configuration plugins can now add custom Markdown introductions and hide the built-in introduction.
 - Added support for organization-managed provider confidence settings. Configuration plugins can now set confidence presets, custom confidence schemes, and an app-wide minimum confidence level.
 - Added support for organization-trusted providers in data source security checks. Configuration plugins can now mark specific provider instances as trusted for data source usage and local embedding warnings.