Edit your sequence after you have created a new empty sequence.
Style - you can choose to resize your video's aspect ratio: vertical, horizontal or square. This affects all the videos in the sequence.
2. Library & Uploads - use BIGVU's library videos or your own uploaded videos.
Click on the "Add" button on the top of each video to add it to your sequence.
Or click on the video, drag & drop to combine it into your sequence.
3. Order of the videos - You can also change the order of the videos by dragging the video to the place you want it to be.