With the Physics Builder Manager window () you manage testing, compilation, and comparison of your Physics Builder files. Testing is when you temporarily register one or more development files (*.mphphb) in your COMSOL session to fully test their physics interfaces in a real modeling environment. When you are satisfied with a collection of builder files, you can compile them into a builder archive.

To open this window, click Physics Builder Manager () on the main toolbar (Windows) or, from the main menu, select Windows>Physics Builder Manager (Linux, Mac). On the toolbar, click again to close the window.