The Tip Feature is only available when swiping credit cards through Nova using a Merchant Gateway.
For more information on Setting Up the Tip feature Click Here
Accepting a Tip During a Sale
1 On the Sales Screen, add the product into the shopping cart and click “Complete Sale.”
2 Choose Credit Card as the payment method, then charge the customer’s credit card.
3 Now at the top of the signature screen you may add a tip.
4 Choose the desired Tip amount by either adding an exact dollar amount, percentage amount, choosing a percentage we have already provided or using the (-+) scroll bar.
5 Have the customer sign and then click “OK.” Finish the rest of the Sale as normal.