*You can add Tip to the credit card payment on O-ATT app by select the Tip amount when prompting on screen.
After the transaction is approved then it does not allow to adjust the tip anymore.
For more up to date information please check links directly from 4Soft POS.
4softpos.com/index.php/kb/order-at-the-table-o-att-set-up-process-with-4soft-pos/
https://4softpos.com/index.php/kb/order-at-the-table-o-att-version-1-2-limitations/
O-ATT Debugging & User Interface