Build me a small wordpress plugin

hi, i am using ultimate affiliate pro in my WordPress website. I divided affiliates into 2 categories, as an sales agent and as an affiliate with different roles. now i want to quantify how my sales agents are doing ? A reference you can check in ni sales report plugin but in that plugin i have to assign sales agent manually, but i want to assign sales agent with the order automatically when my sales agent making and order through there affiliate link. Sales agent s will be created in from the backend manually and assign as an affiliate manually. I want a fast turn.