In Architecture Modeller you can export or import model extensions to a common location known as Gallery.
To export to Gallery:
The selected model extension has been successfully exported to the selected gallery.
Select the extension you want to export and click
The Export to Gallery window opens.
Write a short description for the Gallery item and click
The Select gallery for export window opens.
Browse to the current Gallery file location and click
To Import from Gallery:
Gallery > Import menu item.
The Import from Gallery window appears.
Select the short description for the model extension you want to import from the gallery and click