How does the law of spousal maintenance actually work?

The law regarding spousal maintenance is A.R.S. § 25-319. It has two parts for determining maintenance. Under A.R.S. § 25-319(A), a spouse must meet one of the five listed criteria to qualify for spousal maintenance. Once they do, we move to the calculation. It used to be that we moved onto A.R.S. § 25-319(B) to determine the amount, but under the new Guidelines and updated law, the 25-319(B) factors while still considered are applied during the calculation and determination phases of spousal maintenance.