@gerlandog
If you want to change the button text on POS screen:
Manage-> Automation -> Automation Commands -> double click on Gift -> change “Button Header” text
also if you want to change how it appears on order lines be careful while changing “gift” order state value. If you change that state you need to change it on all rules and actions that uses it. Otherwise you may break work flow. Better try it on a test pc and if it works fine implement it for production.