Main chart

I'd like to customize the donut view because it looks nice right now, but it's a bit confusing and probably useless.

I see that all categories in the donut view are sorted by spending amount, but I don't understand why I can't immediately see the full donut view with all categories instead of split into two. So, I first see the donut view with 5 categories (apparently this is a limitation) and the next page shows the donut view with 3.

It seems like customizing the donut view would be better (like selecting 3-5 categories to see the donut view).