Is there an Affiliate Headquarter for business branches?

Hi,

Re: Affiliates Plugin, can it collect affiliate earnings from other sites to one site?

Let's say I have 3 stores (3 branches), All use different domains but the same hosting.

A. store-main.com
B. store-branch1.com
C. store-branch2.com
D. store-branch3.com

Q1. How can one affiliate just register in Store A and use the SAME affiliate ID for B C D?

Q2. All affiliate earnings will be collected to one headquarter i.e Store A.
Affiliate Z earnings:
Store A: $?
Store B: $?
Store C: $?
Store D: $?
Total Earnings: $?

Are there ways the Affiliate plugins can do that? Or alternatives?
The 4 domains use the same CPanel host.

Best regards,

Vi