No, you won't need to fill out any paperwork or anything.

If you've elected to get it quarterly, it will probably be paid sometime in October, after the end of the September quarter. From memory, mine always came towards the end of the month.

We've now chosen to just have our CCR paid directly to the CC fortnightly. In some ways it is good, because you're not covering the extra. But on the other hand, I kind of liked getting a nice lump sum every few months.