If you need to add a bonus, reimbursements, or any other payroll requirement, you can either (a) add it to the existing pay-run or (b) if the pay run is complete or too far away, do an off-cycle payroll run.
First, navigate to the Payroll tab.
Second, either edit the upcoming payroll run or run an off-cycle payroll.

Third, select the relevant workers for the additional pay-run and add pay types.

Select the correct pay-type. You can add reimbursements.
For bonuses, select the “Billable” type and add in the number of hours and pay rate. For instance, if you wanted to give a $200 bonus, you could add number of hours = 1 and pay rate = $200. The numbers inputted here do not impact any other pay-run in the system.