MPGs and Jogging

Hi Group,
I've just set up a couple of MPGs on my lathe and want to be able to
jog as well in Mach 3. Basically I want to be able to use the lathe in
manual mode using the MPGs and have switches to engage the jog function
to use as a feed function.
From what I have been able to find out it seems you can only have MPG
mode, or jog mode using the keyboard, but not both. You have to change
the function in the MPG screen.
Does anyone have a work around for this ? I've come across quite a few
messages in the Mach3 forum concerning similar problems but haven't
found any solution.
Thanks,
Glen.