Need a primer on Friends/Family

[TreeFalls]

I still don’t understand how to link other adults who already have a MDE account.

Three lines at the bottom, my profile, family and friends, add a guest. Once you add the guest, you should have the option to send them an invite to connect. I'm 90% sure this will work, but I don't have anyone to test it one right now...

 

[StarSeven7]

I would have them get their own account - but it sounds like this is your brother, his wife, and their kids? So a family? If so, I wouldn't bother having separate accounts for each adult. Pick one person as the lead and put everyone else under his/her account. They can still use 2 phones logged into the same MDE account to access plans or make fastpasses - my DH and I do it all the time!