I had to look at a Freestyle Daily from a previous cruise, since we don't require Tender Tickets due to our status, Suites/Haven, or, having booked our Shore Excursions with NCL).
You may want to check the Freestyle Daily on your cruise for something that looks like this:
"You may choose a tender by using any Digital Touch Screen (located near deck/elevator landings. Your Freestyle Key Card will serve as your ticket. Please wait in public lounges until your tender group number is announced over the PA system." (more verbiage follows, but the above gives you an idea of what you are likely to read)