Hey @barryzwart Welcome to the Spotify Community!
It is possible for them to be part of your Family Plan. Each account under the family plan is it own personal account. It doesn't matter where you live just as long as they are given a access code, which you will get, to be part of your family plan. Also If they don't have an account with Spotify, they will have to create an account. And you will have to give them the code after they create an account.
Happy Listening
Keanu_C
Keanu_CRock Star 6
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