You use the ones included or swap them out with your own.
You can also add to it! You can use this EDB as your foundation and add to it... make it your own... and/or personalize for your individual students.
I swap out the stickers depending on my student's unique interests. I always want to show my students that I'm paying attention to the things they tell me. Surprising them with their own personalized reward system is one of my favorite parts of teaching.