AI bot - Personas

Moving away from Google Perspective API and still getting my head around AI and the Discourse implementation of same.

What is the meaning/use for Allowed groups (optional) in the persona config? It seems to default to TL0
Screenshot 2026-02-14 140224

Edit: Perhaps elaborating will be useful.
If Allowed Groups controls access or use then why is the default Spam persona set to TL0?

When would TL0 need access to the Spam Detector bot particularly when AI spam detection max post count and AI spam detection max trust level seem to be controlling control when the Spam Detector is applied?

Setting the Allow Group does make sense for say a group that is doing research and would need to access the Forum Researcher bot.

As always, what am I missing?