It's quite simple. Just open the app where you want to add the reel, look for the 'add story' option, and then select the 'reel' feature. It should guide you through the process from there.
It really depends on the platform and the purpose of the ad. Some story ads might be short, like 30 seconds, while others could go up to a couple of minutes.
You'll need a decent graphics card for smooth visuals and a powerful CPU to handle the processing. Also, a good amount of RAM helps for multitasking while working on the project.
To identify the general specs for reverse harem romance novels, start with the number of male love interests. If there are multiple (more than two) male characters showing romantic interest in one female, it's a sign. Then, check the story's focus. It should be on the female's journey in handling these relationships. The male characters should have distinct personalities that contrast and complement each other, which adds to the complexity of the relationships and is a characteristic spec of such novels.
You can add stories on your laptop by using word processing software like Microsoft Word or Google Docs. Just open the software, start typing, and save your work.