To remove an existing employee from a group, start from Employee management > Employee list
This process will remove employee only from a group. To completely remove an employee, refer to Terminating an employee
Menu > Employee > Employee Management > Employee List
Removing an employee from a group
Locate an employee you want to remove.
Press REMOV GRP from the employee options
When the removal confirmation prompts, confirm YES.
Result
The employee will be removed from the group.