A 'Group #' may be set for any Employee, which can be any set of alphanumeric characters. Doing so provides additional functionality such as filtering your main Employees list. Group #s are also exportable and may be included in your Payroll Batches for further organization and filtering.
To assign a Group # to an Employee, head over to the create / edit Employee screen and enter one next to the 'Group #' input.
If you don’t see this option, you may need to enable it in Admin settings, which can be found by clicking Admin -> Misc. -> Edit -> ‘Enable Employee Groups’