At the beginning i didn't had any idea how it works so my sponsor explained me and it's verry easy. After you got some $ in your account balance(by clicking ads), you can rent referrals in blocks(1 block = 5 referrals, 1 block = 5$) . So, you pay 5$ for 1 block and he will pay you 7.5$ in 75 days.
You can't rent referrals at any time because they are limited. To see when is the next purcase day, go to "Referrals-> Rent Referrals".
When you want to rent referrals, cick transfer and then go to rent referrals.
If you have any questions, the MBC site provides answers for anything. :)
Happy referral hunting!
