Create and integrate multilevel system in 1x5 matrix in PHP script

I have purchased a PHP script called PES Pro (version 3.2.8), this is a traffic exchange platform in exchange for coins from the platform itself. By default it comes with a one-level referral system (1x1), with its referral link and commission. However, I need someone to modify or integrate a multilevel system (MLM) in 1x5 matrix) with 10% commission. In summary: I will need that users have their referral link and that they can refer a maximum of 5 people, and that for each referral they receive a customizable commission. Using the platform coins. I do not need a payment processor, or withdrawal of money, or anything like that, just modify the 1-level referral system that the platform already has or integrate a new one with up to 5 levels. In the attached screenshots I show the screens that the platform currently has in the 1-level referral area.