1. Process refund button to an TMS = 4 order
2. Pick up the check box if price refund only
3. confirm and pick if need restocking fee
4. save and confirm Tender
of course, if want to do full refund for a TMS = 4 order further, do to process the refund button and process confirm would work.
1. process refund
dont pick the check box and then go to confirm directly
after pick if need the restocking fee or not and save and confirm tender