For example, to create seven new $10 cards, grab a stack, tap gift card and select $10.
After the first scan it will present two buttons [Finish $10 x 1 ] and [Load Another]. Tap [Load Another] and scan new card. Repeat again until it says [Finish $10 x 7 ].
The new UI makes it really fast to add a bunch of cards, and the system does the counting for you.