You can check the box for "Add custom categories to this assessment?" in the "Assessment options" section of the Custom Assessment Builder (or when editing a custom assessment). This allows you to assign each question on the assessment to a different category.

If you've enabled custom categories, then the assessment reports will not only show overall scores but also include a breakdown of each category. For example, you may be creating an assessment for the Insurance industry and have topics or "Categories" like:

Adding categories will allow you to see at a glance how the individual performed on questions within each of the categories.

Once you've checked the box, you'll see a new "Categories" section beneath "Assessment Options." You can add as many categories as you like.

When you add or edit questions to this assessment, you'll now be able to choose a category from the Category drop-down menu. If you want to add, edit, or remove categories from the assessment, you'll need to edit the overall assessment.

For more context, see our complete walk-through of the Custom Assessment Builder.