how do affiliates sign up

Hi, i was in a live chat sessoin with Paul who logged into my site to try and figure this out - Paul suggested i open a new support ticket. Affiliates is installed and in add-ons i have activated membership site....we cant figure out how an affiliate would sign up...I have created a page called affiliates and the link url is /affiliates - can someone help - the documantatoin does not cover this -