Corel USER to USER Web Board

How can I create and add a new menu to the library

Do you mean MENU or new FOLDER
To add a new folder click on the + sign at the top of the library, this will add a new folder, which you can then give a distinct name and add your project content

I mean MENU (in share)

Even if PhotoImpact was still fully available it would still be very difficult to make new DVD menus from scratch - as even Photo Impact required a special plug-in and was quite difficult to do

BUT
It is possible to modify an existing menu template and save it back to the menu template store in Videostudio for future use -- this tutorial was made a while back so you may find some differences in the later versions of VideoStudio so watch this on Youtube and see if it helps
https://www.youtube.com/watch?v=WmvWu0lw6G4

here are a couple of menus which I made for myself

I use TMPgenc Authoring Works6-much better.

But Brians method is free, your method will cost about US$100, financially, Brians way is best