Autodesk 24000-000000-9860 - Revit Architecture - PC User Manual page 1395

Name the folder; in this example, we call it Samples. Then right click on the Samples folder entry, and click
Add New Folder again to add a secondary folder, such as Rooms.
Here is the resulting Project Explorer screen:
Outside of the IDE, using Windows Explorer, navigate to the Revit installation folders on the file system
and find the VstaMacros folder. Notice that the corresponding subfolders have been created
\Samples\Rooms
in this location. For example:
Integrating Macros into Revit VSTA | 1357