Some profiles are not available for selection: they may be Cloud synced or in error (could not be decrypted). To use the Dispatcher the synchronization must be disabled.
If you have a long trailer like a double or triple or a long modded custom trailer, this option repositions the truck directly towards the exit of the company avoiding having to make too complicated maneuvers in reverse.
Radios list are read directly from Live Stream SII files. To manage them, flag the radio you want to see here as favourite then click on the 'Update Radios List' button