Can't create more than 7 scenes

I can create only 7 scenes on the scene menu. There is a scroll bar to the right but it’s being grayed out, so I can’t scroll down to create more scenes. How do I activate the scroll bar?

What do you talk about?
Select one slot and scroll with the encoder…

Yup What Steffen said . this might help https://www.youtube.com/watch?v=lGCU6x5BOOc