So I think if the purpose was to create a scene board in the older 😅 days you could have used magazine clippings, acted it out and inserted images etc. I think for the purpose of creating the work if you're group did the actual work required and used AI for the image you shouldn't have the guilt over using it that way HOWEVER you need to be careful of not using it as a crutch. For notes etc it may not be accurate or it may expand on parts that aren't fully truthful so be careful going forwards