To perform a simple 1-channel measurement, connect a microphone to the left input of the sound card and a loudspeaker to the left output as shown below
To load the setup for measuring reverberation time, go to Setup->Load… and find the setup named Room Acoustics_Reverberation Time shown in the figure below
In the following sections several changes to the default setup will be suggested. You may store these changes. Do this from Setup->Store….