I recently remodeled my bathroom, which could previously only accommodate a 30" single sink vanity, to be able to contain a 60" double sink vanity.

This was done by moving the wall on one side of the original vanity about 30" from where it was.

Looking at the vanity that I want to buy, there are support braces for holding the drawers in the vanity right at about the height of normal stub outs and waste pipes on the very right and left sides of the vanity. i.e. if I plumb (behind the drywall) for two separate sinks, the actual vanity would block the stubs.

Is it normal to plumb one set of stub out right to the center of the vanity (where there's plenty of room) and then T-off inside the vanity for both the supply and waste lines?