For more info and for downloading the measurement files, contact support@winmls.com.
Note that the sine sweep method in the software was in an early beta version, because of this we have to be careful when analyzing the data.
Go to Setups->Load... and load the setup named Room Acoustics_ReverberationTime.
Go to File->Open... and open the file named SineSweepHighLevelCut.wav.
The impulse response will be plotted on a dB axis in the lower plot.
Go to Calculate->ISO 3382..., if the calculation options dialog is displayed, then select the settings as shown below
Setting manual start of impulse response