Like on Realms, we need an invite code for a Multiplayer world. When we set maxplayers to 30 adding new players when we are streaming is a pain. With the use of the kick/ban command we can then manage players in-game. https://bugs.mojang.com/browse/MCPE-30431
Comments 2
There isn't currently an invite system for multiplayer worlds over LAN. If that's what you're asking for, that's a feature request, which you can submit at the feedback site.
If you're talking about multiplayer over Xbox Live (and I think you are), you may be overlooking a feature that's already present. In your game settings (with the world unloaded), select Multiplayer, then select Invite Only under Xbox Live Settings. The default setting, Friends of Friends, allows people you may not know to join. I get the idea that's what you're trying to avoid, and in that case setting it to Friends might work for you instead.
If neither of those address your issue, I'm unclear about what you're trying to do. Please try describing exactly how you're setting up your multiplayer game.
Please do not mark unreleased versions as affected.
You don't have access to them yet.