Xbox splitscreen and adding guests

How do I get a guest to join the game? When I use my second controller it asks me to add another profile

I’m pretty sure you have to create an actual xbox profile for guests now. They don’t need gold or anything but just need to create an account.

P.S. Good luck with split screen its still in very rough shape.

I play on PS4, and it requires a second PS4 user profile. Since only one of the profiles has PS Plus, we cannot play online.
Note: joining the lower level game, my high level, solo character lost all fast travel locations.

Oh ok. Gotta make another profile then. I really need a level 1 legendary that uses money as ammo for Jakobs barrel money farming