There are a few different ways to do so. One way is to create a collage, which allows you to combine multiple videos into one frame. To do this, simply select the collage option from the main menu, then choose the videos you want to include. Another way to add multiple videos is by creating a montage, which is a sequence of videos played one after the other. To create a montage, select the montage option from the main menu and then choose the videos you want to include.