The App is located at the Add-Ins tab in the "Spaces" group.

To create spaces, launch the app and follow the instructions.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin.

You may need to restart the Autodesk product to activate the app/plug-in.

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10) and uninstall as you would any other application from your system.

Don’t forget to tick “Room Bounding” checkbox before spaces creation (Choose the file – Edit type – Room Bounding)

Since spaces and rooms are level-based, you should have all the necessary levels. Otherwise, the spaces won’t be created and the error will appear. For example, if there are rooms on Level 1 and Level 2 in the architecture file, you should have these levels in your file (or create the new ones with the same elevation).

Sometimes the "Autodesk.Revit.Exceptions.InvalidOperationException: The Iterator cannot proceed due to changes made to the Element table in Revit's database" error occurs. In this case, simply run the add-in again.