I have a Family Share account set up. I want to continue to share music however I do not want the family to have access to purchases on my credit card. How do I restrict this feature. Thanks
If the other members of the Share are under-18 you can enable 'ask to buy' on their accounts : Request and make purchases with Ask to Buy - Apple Support
Apart from that you can't, you are either using Family Share (and sharing Apple Music and taking responsibility for all purchases), or not
How can I remove family share purchasing but keep family sharing for music
