Start the software by selecting SDR Console (V3) from the start menu.
The first step is to define a radio, to do this simply select Select Radio from the Home panel in the ribbon bar. As you do not have any definitions you are prompted to open the Definitions window.
In this window click first on Search which displays a dropdown list, from this list select then the radio type you have. You must have at least one radio definition.
When you start a radio you select the sample rate. The usable display bandwidth is approximately 80% of the sample rate, so if you want to display a 200kHz bandwidth you should select a sample rate of 250kHz or higher. (Higher sample rates use more CPU cycles.)
If you cannot find the radio when using the Search option then the logfile will probably provide useful diagnostic information. To display the logfile select the Tools pane of the ribbon bar, then click the Logfile button.