I’m not sure what you’re asking here but everything else you asked is very much possible with Shotcut. Although if you were going to go and do about 24 video clips you would definitely be needing to do them in a proxy workflow because that is a tremendous amount of of processing that the computer would have to do to handle that many videos at once.
A member of the forum here @Y.S posted a video project he did that is similar to what you are asking:
He would be ideal in order to guide you and give you advice although if you are new to editing you need to go through some beginner tutorials so you know your way around the program. Click on “Tutorials” that is on top of this webpage and it will take you to the section that includes several videos for beginners. After that, hopefully @Y.S can spare some time and give you pointers on how to achieve this kind of project. 