After you have installed the plugin you can see the LezTools ribbon tab.

Rename Marks button shows you a dialog that lists all the categories used in the project.

You can insert a text in Prefix and Suffix cells and optionally check “Include Level Number”.

The second button of the Ribbon Tab lets you delete all the Marks parameters of the project.

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