...
Vouchers can be placed on hold to prevent them from being paid. This might be done if an issue rises with the vendor. Payment can be withheld until the issue is resolved. To put a voucher on hold, simply click on the hold check box, the check box to the right of the vendor name. Once a voucher is on hold, it will not print on a check run. If you print check runs with vouchers that are on hold, those vouchers are moved forward to the next scheduled check run.
...
Rescheduling a Voucher
A voucher can be rescheduled to a different check run. Simply click on the Reschedule button 
next to the voucher you wish to reschedule. Then choose from the list of check runs.
...