To increment a Bar Tab is the process of increasing the Pre-Authorization amount to cover more items purchased by the customer.
IMPORTANT! Incrementing a bar tab is only possible if the Single pre-auth option is DISABLED in EFT / View / Options / Identification. See Electronic Funds Transfer Setup
If the increment is approved, you may resume ordering items as usual.
IMPORTANT! Items should always be ordered at the POS before being served or poured. That way, if the increment is declined, you will be able to quickly cancel the last ordered item(s), which will bring the total below the original pre-authorized amount. Then, you should close the bar tab and inform the customer that the increment was declined.