how do i disable my other family members getting notifications on family sharing when i add another family member to the family sharing?

Hello cma0711,

It sounds as though you don't want family members receiving notifications such as those that appear when a new member is added to the Family Sharing group. There isn't a way to prevent that notification exactly. You may be able to change the notification settings on the specific devices you don't want to receive these notifications as outlined in the following article.

Use notifications on your iPhone, iPad, and iPod touch

Have a great day!