how to show a deph three in the afiliate panel ???

Please I want to set up a custom code in the afiliate panel to
each afiliate can see how many people are in his three. I have
the plugin Interprice. I dont understand to much for programing, please can you
tell me exacly how custom code have I to use in the afiliate panel when a afiliate is afiliate to this people see how much people are in his three becouse I am using 10 leves.