The instructions mainly address using a CNC mill. Can I also use it to run a lathe?
Yes. EMC2 now includes a program for CNC lathes. On the desktop, just select the icon for the leadscrew pitch of your lathe (inch or mm) and open the EMC2 program for your lathe. This was one of our main reasons for switching from EMC to EMC2. Earlier versions of EMC do not have a lathe-specific version written for them, but writing G-code for a lathe tool path is pretty easy to figure out. The lathe uses just the X and Z axes. (In machining, the spindle axis is always called the Z-axis.) Keeping this in mind it is not difficult to re-orient your thinking from mill to lathe.