Closing the drawer counts the till and records the deposit. Do it at the end of each shift or day, per the site policy.
The POS shows an overage or a shortage if there is one.
Once closed, the POS returns to the Open Drawer page ready for the next shift.
Do not adjust the count to make it balance. Enter what is actually there. The variance is the information. A drawer that always balances exactly is usually a drawer that is being fudged, and it hides the day something real goes wrong.
Source: Global Payments Genius Retail help center. Newly built article, pending review.