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I have not seriously attempted this with OpenStudio, but yes, there is an option to show compliance with Minimum Ventilation (VRP) using modeling software for LEED. I would caution that it is much more important that the air handling equipment schedule be the basis of the modeled ventilation rate rather than flicking the switch for VRP calculations in OpenStudio and toying around with the max Z ratio. The Min Ventilation credit is only to show that enough outdoor air is provided as scheduled. I have seen projects go through appeals in order to get this right.

I usually just fall back to using the 62MZCalc on suspected critical zones.