I think modeling is customizable, even if I've never done I've always limited myself to adding icons to the top bars, I think that in principle you personalize as the classic office menus, so you could find tutorials that explain well.
regarding the preservation of personalizations should be saved in the usual local folders customize etc etc., unless the software house that installed the program did not put personalizations on the server so we can also access other pcs of the network.
Thank you.
