At the moment, if you want a contractor to upload assets, that aren’t limited to clothing, to your group, you’re required to give them full access to all of your group’s games in order to do so.
I’m mostly thinking of animations, but this feature request isn’t specific to that, since it’d be applicable for sounds, decals, mesh and models as well.
“Configure group items” is rather vague until you search for the Roblox Help site, where this is stated.
It would improve my development experience if permissions were better separated.