Setting up EX2 Ultra for both Mac & Windows

Is it possible for the EX2 Ultra to be set up to allow both Mac and Windows machines to access and back up to it? Reason I ask is I have a Mac machine whereas my college age teenagers are using Windows machines. We wanted to try to set up our EX2 Ultra (connected to our router as a NAS drive) for both.
If it can, do we need / or can we add a partition so it appears as two drives?


You could refer to the following link: