From first setup to alerts and history.
There are two ways to invite, and both start from the add-person icon.
Tap the add-person icon at the top of the screen. A QR screen opens: the camera is on the top half, your own QR code on the bottom half.
Tap “Groups n / Members n ▼” at the top left to open the group list, then tap the add-person icon on the group you want. The same QR screen opens.
Place a zone over somewhere you go often — home, school, work — and you will be notified when someone in your group arrives or leaves.
Tap the green pin on the map to Edit (name and radius) or Delete. The same actions are available from the Geofences list in the top-left pull-down.
Tap the 👣 icon at the top to open your own trip history. Trips are split by time; selecting one draws the route on the map. To see someone else's history, open it from their detail screen.
Normally updates are kept modest to save battery, and you raise the rate only for the person you are watching. Use the slider on that person's detail screen: device default / 60s / 30s / 10s / 2s.
To keep your position updating while the app is closed, a few device settings may be needed.