STA:

1. Type "STA" to start the commands
2. Select the types of stairs
3. Select the Lower Point in the model space.
4. Select the Higher Point in the model space.
5. Then the stairs are created.

RAIL:

1. Type "RAIL" to start the command
2. Select a series of points on the platform boundary. You may select boundaries consecutively with different orientation
3. Press "Enter" to create a handrail.

FPP:

1. Type "FPP" to start the command
2. Select a series of points on the platform boundary. You may select points on the boundary with different orientation consecutively
3. Press "Enter" to create a footplate.

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.