After installation, you can add or remove Revit content using the Add or Remove Features utility.
To add or remove content
When you use the Add or Remove Features utility for Revit, the following paths may update in UserDataCache\Revit.ini:
The next time Revit starts, it copies those paths from UserDataCache\Revit.ini to the user profile version of Revit.ini.
For support installing, licensing, or configuring your Revit product, visit the support page or ask your question via Autodesk forums.