After having loaded Film1, load Film2. Answer Don't close the open film, then Film2 will come on a new Timeline.
Click Window on top to see them or change between them, or triangle in the left side under monitor. If you want a DVD, you'll get a meny with the 2 films.
If you want the 2 films on one Timeline, Film2 must be copied to the end of Film1, then delete the Timeline with Film2.