If you don't have a Child Support application and agreement, then your FTB is reduced to minimum amount. Once you have applied it is put to the full amount, then once the application is processed, depending on how much CS you get it is adjusted.

Before I applied for CS my FTB for Ash was something like $40. Once I applied it went to maximum amount, and now that there is a CS agreement it has changed to reflect that but its still more than the minimum.