Stop sharing your location with others in your Family Sharing group
By default, all members of your family can locate your devices set up for Find My Mac, Find My iPhone, Find My iPad, or Find My iPod touch. To see each other’s devices, family members can use Find My iPhone on iCloud.com from any Mac or Windows computer, and they can use the Find My iPhone app on their iOS devices. Family members can also use the Find My Friends or Messages app on their iOS devices (iOS 8 or later) to help meet at a specific place, see when another family member is nearby, or make sure a child is where they expect.
If you need privacy, you can stop sharing your device locations with individual family members.
On your Mac, choose Apple menu > System Preferences, then click iCloud.
Click Manage Family, select a family member on the left, then deselect “Allow [name] to see your location” on the right.