Yes. After you’ve added the scene to a Room, tap on the Natural light scene card. Tap the pencil icon. For each time slot, you can choose another scene to use.
If you’d like to edit each scene that Natural light uses, you’ll need to edit the individual scenes. For example, if you’d like to make the Energize scene dimmer, open the scene card for Energize. Adjust the brightness and save the scene. The changes you make to the individual scenes within Natural light will be reflected there.