Application Fee Waivers

I would like to apoligize if this is a stupid question but my school counselors are utterly useless. (I`ve filled out multiple “request to talk with counselor forms but they havent responded”.)

my quesion is actually quite simple though. When I took my SAT I received a fee waiver, which now that I`m doing college applications i dont know how to send these waivers in. Is there some physical paper I should recieve and mail in, or do I do something with collegeboard? Any help would be appreciated.