How to compute one parameter only, e.g. reverberation time?

A single parameter can be plotted using the plot type Room Ac. Parameters, it can also be displayed in the grid as described below.

In Room Acoustics->Parameter Settings... the type of parameters to be displayed can be selected. By using the check boxes, the user can determine which parameters to be computed. If only reverberation time is to be displayed, make sure that all check boxes, except reverberation time (T30) are turned off.