is there a way to manualy insert a signup on the Affiliate plugin

Maybe a bit of a wierd question, but i want to use the affilate plugin somewhat broader then its designed for original

Currently a signup occurs when people link from another website with a reffer-id & signup to a new blog
is there a way to do/insert this "signup" manualy.(by a piece of code ) e.g. on al specific page ?

So for example i could track also information forms/contact requests a product sale or specific downloads by putting a (shortcut) code on the "thank you" page thats inserts a "signup" in the Affiliate stats of the refferal.

If so how to call for this / wich code to be used (or some pointers)

Hope i`ve made myself clear as english is not my first language.

Thanks
Ronald
(wp mulitisite starter)