I just talked to my step brother about this month's payment since I didn't know when his allotment thing would kick in. Apparently how it works is he tells them the full amount of the allotment ($100) and how much to take out of each check (in this case half from each so $50) and then when the amount they've taken out of his pay matches the full amount of the allotment, then they transfer it. He and his wife noticed that $50 was taken out of his check on the 1st which means I should get the allotment transfer around the 15th. I've already paid more than the minimum required on that CC so as long as I have the money to pay on the card by the 20th (ie before the next statement rolls) then I'm good.