Linking affiliates together

I purchased the affiliate enterprise from you and I know what I’m going to ask is probably in the documentation.

But there is a ton of documents which is great but also a pain.

I need to know which document will tell me how to link affiliates together?
If I have a customer register on my website, he needs to be joined to the person that introduced him when he registers.
So there needs to be a means of linking these two, three or four guys together.

My system works like this, Mr E registers, but Mr D introduced him so Mr E needs to be linked to Mr D who will receive 5% every time Mr E makes a purchase.
But Mr D was introduced by Mr C and therefore Mr D is linked to Mr C and Mr C will get 5% every time Mr D makes a purchase, and Mr C will get 8% every time Mr E makes a purchase.
But Mr C was introduced by Mr B and therefore Mr B must get 5% every time Mr C makes a purchase and Mr B must get 8% every time Mr D makes a purchase and Mr B must get 12% every time Mr E makes a purchase.

I found where to set the percentages, but I have not found how to link these guys together.

gwcorporder@gmail.com