diff --git a/doc/user/gitlab_duo_chat/agentic_chat.md b/doc/user/gitlab_duo_chat/agentic_chat.md
index 01220ae6bab31ea495743e826cae49b4d60e7ed8..1fe05f7e550a67a3b91324e9c72f1f8c3a7adc18 100644
--- a/doc/user/gitlab_duo_chat/agentic_chat.md
+++ b/doc/user/gitlab_duo_chat/agentic_chat.md
@@ -309,28 +309,34 @@ To select a model:
 {{< history >}}
 
 - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/562708) in GitLab 18.4 for the GitLab UI as an [experiment](../../policy/development_stages_support.md#experiment).
+- [Added](https://gitlab.com/gitlab-org/editor-extensions/gitlab-lsp/-/merge_requests/2196) to VS Code and JetBrains IDEs in GitLab 18.5 as an experiment.
 
 {{< /history >}}
 
-When you use Chat in a project in the GitLab UI, you can select a specific agent for Chat to use.
+When you use Chat in a project in the GitLab UI, VS Code, or a JetBrains IDE,
+you can select a specific agent for Chat to use.
 
 Prerequisites:
 
 - You must [enable an agent in your project](../duo_agent_platform/agents/_index.md#enable-an-agent)
   from the AI Catalog.
+- For VS Code, [install and configure the GitLab Workflow extension for VS Code](../../editor_extensions/visual_studio_code/setup.md) version X.XX.X or later.
+- For a JetBrains IDE, [install and configure the GitLab plugin for JetBrains](../../editor_extensions/jetbrains_ide/setup.md) version X.XX.X or later.
 
 To select an agent:
 
-1. In the GitLab UI, open GitLab Duo Chat.
-1. In the upper-right corner of the drawer, select **New chat** ({{< icon name="duo-chat-new" >}}).
+1. Open GitLab Duo Chat and select **New chat**.
 1. In the dropdown list, select a custom agent. If you have not set up any custom
    agents, there is no dropdown list, and Chat uses the default GitLab Duo agent.
 1. Enter your question and press <kbd>Enter</kbd> or select **Send**.
 
 After you create a conversation with a custom agent:
 
-- The conversation remembers the custom agent you selected.
+- The conversation remembers the custom agent you selected. You cannot select a different
+  agent for that conversation.
 - If you use the chat history to go back to the same conversation, it uses the same agent.
+- If you go back to a conversation and the associated agent is no longer available,
+  you cannot continue that conversation.
 
 ## GitLab Duo Chat capabilities