Catalina Beta with Targus Universal Docks
Thee DocKtor is trying out Catalina Beta with Targus Docking Stations. Everything works as expected.
For the Universal Docking Stations, it is necessary to install DisplayLink release 5.1.1 and check the DisplayLinkUserAgent box at System Preferences / Security & Privacy / Screen Recording, and then reboot.
I am told DisplayLink has a release coming with the release of Catalina and Targus will post more information at that time.