How to turn on Auto Invite

Okay I’m at a loss for this, I know auto invite was added to the game a while back. But I know Blizz removed this and ever since I’ve been at a loss for trying to relearn how to turn on auto invite when making groups.

Please. Someone help me out here.

I could be wrong, but I think the only premade group that allows autoinvite is a world boss one. Everything else has to be manually accepted. At least, that’s my memory of how it worked the last time I used it.