The app will install the content to CPak Common. "C:\AutoCAD Plant 3D 2024 Content\CPak Common\Python Scripts Flanges - ASME Flanges Catalog". 

Run Autodesk® AutoCAD® Plant 3D and run the command "PLANTREGISTERCUSTOMSCRIPTS" to compile the scripts and restart the program.

Create a new spec and add all components from the catalog to the spec.

For more information, please check the help document in the installation folder.

For more details visit the YouTube link here.

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