maximizer will 'maximize' a program that was executed using a command.

the command editor is also in the setup area

so, you'd make a command called wow1 and hit the 'program' button to find wow.exe
hit the '+'
go to maximizer, enable, and define your regions.

hit ok

keep in mind, you should force the wow launcher to run every tuesday (or whenever there is a new update) in order to keep your wows in sync. wow.exe, which your command would be executing, would not check for version updates.

also, the built-in maximizer currently only works for a single monitor system. if you are using a dual monitor system, i believe the 2nd monitor would go unused.