We recommend you use this feature for an employee's first timesheet only.
When you click the Use Recurring Pay Details button, all the employee's linked payroll categories listed in the Payroll Details view - Recurring Pay of the employee's Card Information window appear in the Payroll Category column of the timesheet. This saves you the trouble of selecting them one at a time.
However, all the hours for each payroll category appear in the first day of the timesheet week, so you may have to distribute the hours through the days or weeks of the time period.
For all subsequent timesheets, you'll find that using the Copy from Previous feature, which doesn't require redistributing hours, is an easier approach.