EMS Theory - Continued

For the famous CF 10s ON 50s OFF protocol, I have just bought a Genesy 1200pro that enable me to program my own set-up

this is what I have for now…

Warm-up
Total duration: 5min
Frequency: 25hz
Width: 400μs???

Stimulation MaxS
Total duration: 10min
Frequency: 90Hz
Ramp up: 2s
Contraction time: 10s
Width:400μs
Ramp down: 1s
Rest: 47s (4Hz)

Active Recovery
Total duration: 5min
Frequency: 9Hz
Width:400μs???

It would be very helpful If someone know which width I should go with