How do I know if an employee has entered an off-site arrival?

If you suspect that a user has entered an Clock-in / out outside of the defined locations, you can check this in the Overview of Clock-in / out report. If one of the defined locations is entered in the Location column of the report, then the user has logged in within a tolerance radius. If the cell is blank, they have either logged in outside the radius or have not enabled location sharing on their mobile phone.