Find My location and Family Sharing location are configured independently.
1) Family Sharing is set in: Settings > Family > Location Sharing*
2) Find My sharing can be set multiple ways** , e.g.: Settings > Find My
*Share locations with family members and locate their lost devices on iPhone - Apple Support
1. Go to Settings > Family > Location Sharing.
2. Turn on Location Sharing for the family member you want to share your location with.
You can repeat this step for each family member you want to share your location with. Each family member receives a message that you’re sharing your location and can choose to share their location with you.
You can stop sharing your location with any family member at any time.
3. If you want to share your location with new members that join later, turn on Automatically Share Location.
**Share your location in Find My on iPhone - Apple Support
Set up location sharing
1. Go to the Find My app on your iPhone.
2. Tap Me at the bottom of the screen, then turn on Share My Location.
3. The device sharing your location appears next to From.
If your iPhone isn’t currently sharing your location, you can tap Use This iPhone as My Location.
Note: To share your location from another device, open Find My on the device and change your location to that device. If you share your location from an iPhone that’s paired with Apple Watch (GPS + Cellular models), your location is shared from your Apple Watch when you’re out of range of your iPhone and Apple Watch is on your wrist.
You can also change your location sharing settings in Settings > [your name] > Find My.