The way WeVideo works is simple: you can choose a video template to start with or create one from scratch, upload or record your video, drag and drop it to the editor timeline, edit it the way you want (e.g., trim and merge clips, add music and text, apply effects and transitions, add green screen effect, etc), and once done download and save your video or share it directly online.
https://www.educatorstechnology.com/2021/06/wevideo-create-instructional-videos-by.html