Re: EMC and 4th axis

I looked all over and I can't find any info on adding a 4th and possibly
fifth axis.
But the software says it supports up to 6 stepper motors.
I have my new 4 axis controller (2.5 amps) running very nicely on cncpro and
desknc. I really would like to use emc also. I figure that the 64stepper.ini
file would have to be modified and that AXES=4. I would also reason that I
would have to add the parameters for the 4th axis to the ini file.
The question is , with the run file looking for the steppers on 378H for the
x-y-z and the 4 and possibly 5th axis is on 278H how do you add this to the
files and last how is the screen changed so that you can see all the axis?
Is there a way to designate the additional axis as the A or W axis?
Or is the screen automatically changed when the additional axis are added
to the setup files?
TIA
Dan