Very easily, just use the little sissors icon....Right click on it to learn how to use. If you can breath, you can split....
Bbmayo's guide is for splitting movie only?? I backed up Ultimate Gretsky (disc 1) using this. Worked great. However, I used the scissors backwards for the first disc. LOL. Learn by mistakes...first disc, move arrow from right to left, not vica versa. Is there a way for splitting movie and having extras on one of the discs as well?
Use the Clone DVD Titles and then just uncheck what you do not want for the first disk and check what you do, and then co the same for the second, should work.