Let's say I have three level 1 categories, website help, information update and Technical issue.

• Website help::Navigation
• Website help::login
• Website help::signup
• Information update::Name
• Information update::dob
• Information update::Address
• Technical Issue::Payment
• Technical Issue::Order

How would I roll up level 2s and level threes into the 3 main categories like the below? I reviewed Explore recipe: Reporting on nested drop-down fields – Zendesk help but couldn't get the report to show like this.