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 the Find My app in iCloud. To see each other’s devices, family members can use the Find My app on their Mac, iPhones, and iPads. They can also use using a computer web browser to access the Find My app on iCloud.com. Family members can use the Find My app or Messages app 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 Family Sharing.
Select Location Sharing in the sidebar, then deselect the checkbox of the person with whom you want to stop sharing your location.