I reviewed the manual http://www.machsupport.com/docs/Mach...all_Config.pdf
the only easy way would be to use coolant outputs one and two. both have delays.
you may have to trick the spindle into thinking it's working but coolant output 1 (Mist) could be preheat and collant two (flood) could be cut oxygen. you would need to be mindfull of the power reqired to open a solinoid for this. Unless of course you have two coolant pumps already on your machine.