We have that for you...simply change the letter at the end of your linking code to denote whatever you assign to it. Ask for help, im here for you.
Currently we have the ability to have 26 different tracking codes per account. If there was an express interest for more id have it looked into though.
In fact, as this is a more serious board, anyone from here with a request should feel free to ask me and ill work to get you what you need.
Adultpaymaster