Group rights to edit/delete posts?

Apologies if this has been discussed already, I searched but couldn’t find it.

I’m looking for a way to give group owners the right to edit and delete posts in the forums their group has access to. I do not wish to grand moderating powers to these group owners as that is effective for the whole forum, and this is just for specific categories that “belong” to these groups.

In the security option of a category there is only possibility for groups to create/reply/see.

Is there a way to extend it ? As a work around I would create a new group for the group owner to have these rights… but they aren’t available anywhere.

Is there a way to add these? Plugin or otherwise?

Thank you in advance!

Edit: I have found a workaround by giving them level 4, and giving level 4 access to the category as well. But this only works now bc there is one trust level 4 member…

No, there is no way to do this.