If you cannot find your employee listed on the schedule, please check the following:
Are they active?
They will be listed with the active employees within the employee tab.
Are they still on selected to be on that schedule in their profile?
Check the list of schedules selected for them to appear on in the details tab of their employee profile
Do they have a future start date on their profile?
Check if they have a start date in the details tab of their profile. If this start date is in the future the employee will not be shown on the schedule until that date.
Any three of these reasons would cause an employee not to show up on the rota.