How do I get the TreeView widget control to indent?

How do I get the TreeView widget control to indent? Currently when an item expands its 100% width. It’s hard to tell what items are nested under other items.

I feel like there should be an easy way. What the point of a tree view where the items are not intended and nested under their parent?

This blogpost shows how to setup and also indent TreeViews (need to Googletranslate the page to english).

You have to add a TreeLevel variable (int) and set it’s padding within the horizontal box slot.

I feel like this should be easier, but this works. Thx for the help