Quadplane ESC Calibration

I can easily calibrate the 4-in-1 ESC for the VTOL motors, but how do you calibrate the single ESC for the pusher motor???

Is anyone familiar with this? I have tried setting the initial mode to FBWA and having my radio preset to that mode as well, with the throttle stick maxed out before powering up my Pixhawk Cube Black. I never get tone on the 5th ESC, nor will it do anything but stutter when throttled up in FBWA mode. The Elevator and rudder do react, however. It appears that the VTOL 4 in 1 ESC is calibrated properly though.

How do you calibrate 4 motors
My problem is: can calibrate 1 front motor but can’t calibrate 4 motors