I'm not aware of any such on/off switch or indicator. You could check whether you can turn off Workspace Labs. If you can't turn it off then you haven't joined:

I'm not aware of any such on/off switch or indicator. You could check whether you can turn off Workspace Labs. If you can't turn it off then you haven't joined: https://support.google.com/docs/answer/13447104?hl=en#labs-opt-out&zippy=%2Chow-to-exit-from-google-docs-slides-sheets https://support.google.com/docs/answer/13447104?hl=en#labs-o... I'm not sure whether there are any other beta programs that require these permissions.