You can create tree slicers from different layouts.

Review these examples:

The data has three columns:

  • Key
  • Text 
  • ParentKey

 Top-level items have no parent, and children refer to their direct parent. There can be multiple layers of nesting.

The data is in a table with a column for each level of the tree. Parents are repeated in the data when they have multiple children.

The data is similar to the one-column layout, but there are two columns per level of the tree. This allows items to have a key that is stored but not shown.