I assigned the MPG to the MPG DRO 1 , the axis selector switch and scaling switches to OEMTRIG 1 through 6.  In jog mode MPG when I click on MPG axis ALT A each axis will move when selected.
How do you assign the axis  selector switch to set the proper axis and how to set the 1x ,10x and 100x scaling factors?

You enter the oem code for the button function you wish to use. It is done from the Config menu then system Hotkeys.
 You will find the OEM list at the top of the forum but the Axis select is 175 and cycle jog step is 171 (I think that is waht you are eaning by scaling factor?)
On my panels I prefer to have individual buttons to choose X Y and Z rather than having one to toggle through, if you wanted that then the oem codes are x 185 y186 and z 187

Hood