REW Beta Release Help with changing the sweep configuration for a multiple mic measurement

I'm trying to alter the sweep configuration for the multiple mic measurement to be the same as that of a single mic. To do this I am trying to set the smoothing to "None" and the step size to 0.36621097. However, I see that the measure/sweep/configuration call does not support this. Is there another call in the measure section of the API that would allow for this to be done? I've taken a look through the measurements section, but would prefer to make this change before the sweep has run and not after.

Is there a way to make a multi-input average use linearly spaced data? I don't see that as an option in the export screen, just differing PPO values.