Hi John,
no, thats not what I'm talking about.
It is "multiprop" like in "multi proportional". Futaba has a small device, MPDX-1 that will give you 8 PWM outputs from one single channel on a receiver. In order to activate that, you will have to assign "multiprop" to a channel. You do that on the "function" menu, the one where you select which function goes on each channel (elevator, aileron, throttle etc).
You can see the two multiprop features on the picture of my 18MZ below