How is shared my husband

Manage your Apple Music membership on your iPhone, iPad, iPod touch, Mac, PC, or Apple TV - https://support.apple.com/HT204939 - Change your membership > "With a Family Membership to Apple Music, families of up to six people can enjoy all of the benefits of Apple Music, each with their own library. ... To use a Family Membership to Apple Music, you must set up Family Sharing on your iOS device or Mac. "

Set up Family Sharing - https://support.apple.com/HT201088

You'll need to expand on your question a little. What is it that you want to know?

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