How Fee Waivers Work on Coalition App

I was filling out applications on Coalition app, and I accidentally checked that I received an SAT fee waiver. I realized this after I was about to submit my application and it said that the fee was $0. I was just wondering how Coalition app confirms that the student is eligible for the waiver. I know that Common app gets confirmation from my guidance counselor because it is indicated on the website, but I didn’t find any way to confirm it on Coalition.