What Can Be Done with the Category Feature
When you enable the category feature, you can add the "Categories" field to a form to categorize records.
The category list is also displayed in a hierarchical tree on the left side of the "Record List" screen.
When you click a category, the list of records that are sorted to that category is displayed. When you click a parent category, all the records that are organized into the child categories are displayed together.
Categories can be configured with up to five levels of the hierarchy.