diff --git a/README.md b/README.md
index 448351fdd..d32a53ad0 100644
--- a/README.md
+++ b/README.md
@@ -381,6 +381,7 @@ If you prefer to configure manually, add the following to `~/.nanobot/config.jso
 > - `"mention"` (default) — Only respond when @mentioned
 > - `"open"` — Respond to all messages
 > DMs always respond when the sender is in `allowFrom`.
+> - If you set group policy to open create new threads as private threads and then @ the bot into it. Otherwise bot the thread itself and the channel will spawn a bot session
 
 **5. Invite the bot**
 - OAuth2 → URL Generator