Sure, if you want an extra 2 axis, beyond the X and Z, just open up screen designer and Drop them in.
There really isn't alot of differences between lathe and mill screens, (they are the same 6 axis control), it is just Lathe has radius/diameter settings on the X. and Mill doesnt (since it doesnt use it).
If you wanted you could has all 6 axis working on your lathe.........
Scott