Doable! The boxes for 3 scenes don't need to be taken literally, you can write a guide of the sort of clips you would like to see, or simply ask the creator to include different scenes. A guide to follow can be:
‘Scene 1 - Introduction (Call out Audience & Problem), Scene 2 - Product use (Show solution), Scene 3 - Ending, thoughts and review, (Call to Action).
For example, you can write ‘show 3 different ways you use the product in your daily life’. This gives the creator flexibility to include what they feel comfortable with. However, if there is a specific amount of scenes to include that need to be filmed a certain way, this would need to be a ‘Premium’ request.