User can automatically check in when a user walks into a GeoFence when they're on duty.
Navigate to Admin on left panel and choose Geofence Types

Select New to create an new Geofence Type

create a Geofence Type with the Name : check in

After Geofence is created name sure to Select Groups and assign to the appropriate group that use check in function and press ok

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Navigate to Geofences on the left panel and click New to check a new geofence with GeoFence Type Check In
Refer to Create GeoFence

When an on duty user walk into the check in geofence then user will automatically checked into the system.