The option to add a class to visual studio is present in the menu, but the add class template is missing from the list.
This is caused by an incompatibility between Visual Studio 2019 version 16.6.X and Dev Express control suite version 20.1.3
Upgrade Dev express control suites to version 20.1.4, or stay on Visual Studio 2019 16.5 if you are bound to the earlier version. A hot fix has been made available. [ read more ] [ and more ]