• Start SHAPESHIFTER. Choose if you would like to purge unused families after replacement.
• Select Family Instances or Elements to replace.
• Select Categories to replace.
• Wait some seconds.
• Done!!

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.

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.

Some users behind a Firewall or proxy may have problems to activate the add-in. Please follow the instruction on the link to solve proxy problems.

https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/AutoCAD-requests-to-Autodesk-servers-blocked-by-proxy-servers.html