Hello, I am thinking of signing up for the family plan on Apple Music. I know that to do this, you must set up family sharing. I've no experience with this, but from the text in the family sharing settings, it appears that if I do this I will be charged for the purchases my family members make. Is this true? Can I block my family members from seeing my purchases? Is there a way to share a family plan with others, and yet not have to pay for those books or apps they purchase from Apple, after joining my family plan? Thanks for any help.