How do I "unjoin" a group?

I have to join to see what it's all about. So I've joined a bunch that I now don't want cluttering up the "Groups" section of my account. As far as I can see I can only "unsubscribe."

Under the cover image there is a More option.... 'Leave Group'.

I can't tell if this is going to me (AG31) or simplyjohn. I want to thank simplyjohn and ask simplyjohn if I should have gotten a notification about his response to me. I don't believe I did. I was watching for it.

Hi. Well if you were watching this topic then you should have been notified of my post. Perhaps that didnt happen. Anyway hopefully I addressed your enquiry.