Steps:

1. Open the Autodesk® Revit® project in which you want to create the rooms.
2. Click on the BIM_SOFT_2 addin tab.
3. Click on the Create room app icon.
4. Select the phase & levels in which you want to create the room.
5. Set the limit offset & click on the ok button.
6. The rooms will be generated automatically. 

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

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 7/8.1/10/11) and uninstall as you would any other application from your system.