Hello. How can I enable all group users to change cover and avatar of the group?

Hi there.

I'm very sorry but this's not possible out of the box and it will require php code modifications which are beyond our support scope. So maybe you could consider hiring a professional php develope for this task, check our developers page here for list of recomended freelance developers > www.jomsocial.com/jomsocial-developers You can also propose that idea to our uservoice page here > uservoice.jomsocial.com and if this feature will be popular within our customers, then maybe our devs will consider it as future improvment.