Someone posted the procedure to check the fluid they used the same transmission as the Cruz, it is quite involved, it requires warming the trans to a certain temp then removing a plug that is suppose to drip a few drops to let you know its full, all this is done on a level surface.
Just under the air radiator hose on the right side looking under the hood you will see a red cap, that is the fill port.
Under the vehicle and facing the passenger side you will see the drain plug, Its only about 10mm in size.
The drip hole is located facing the front of the vehicle you have to really look hard to see it
My advice would be when you drain the trans just put back the same amount of fluid, its way easier than the checking procedure, if your hard on the car, drain the fluid every so often putting back the amount you drained.
The days of removing pans and changing transmission filters are gone, if you want to keep the fluid fresh you are going to have to drain and refill method to keep it that way.