Help with setting up a Y4+1 configuration

I’m currently trying to implement a drone that makes use of a Y4 +1 configuration ie a normal Y4 configuration + 1 propulsion motor.
I’ve been told that Y6+1 is currently possible but was wondering if anyone had any idea if Y4 +1 has been done before/ if Ardupilot is capable of a Y4+1 configuration at the moment.


I was reading the pages for something similar and looking at the available settings on the firmware i cant find settings for Y4+ 1 config and actually i was looking to find and make somethign similar. Maybe only some of the Devs here like @tridge can respond on this

Y4 is Q_FRAME_TYPE=19, it should work fine

And frame class quad or Y? Because with Y motor three does not take any pwm