Official comment
The M3M should find everything automatically. For planning purposes you would select the M3M Visual unless you are doing a multispectral data collection mission.
There is SD card write speed which lets you tell the app how quickly the card can accept images. It is less important on the Enterprise aircraft since the cameras are much better and can write the images faster. The M3M is supposed to support an Imaging Frame Rate of up to 1 image per second so you could put the fastest setting in the SD card write speed to support that.
Then in the Imaging Frame Rate select 1.5 or slower. We haven't had much luck with the fastest speeds DJI allows.
We will look into the camera settings on the M3M. It is basically the exact same camera as the M3E but there might be differences in the camera settings.