2ndaccount cant play MCC w/o 1st account logged in

I finally finished installing MCC and my boyfriend logged into his account to try and play and it wont let him.

It keeps asking if he has rights to the game. If I’m logged in he has no problem playing even shows he is the only one playing campaign… But he can’t play if I’m not logged in.

Is there a way to fix it or did I totally -Yoink- this all up?
When I click “check in store” after it asks about the rights to the game ( which we used the code that came with the Xbox ) the only option is to “bundle” and that does nothing…

Thanks for any help.