Add-ons to PTC script

Hello, I need some add-ons for a PTC script. It's currently referral renting and upgrade pack features. Referral renting script is almost done, we just need to discuss some add-ons to that as well. It's not a big project and it should be finished in about a week. Maximum. The base foundation of the script is already created, as well as all the lib. files. Please note, the coder MUST have knowledge in WHAT Paid-to-Click (PTC) concept is, and what referral renting and upgrade pack features is. I will not accept coder with no knowledge in PTC.