How to create multiple categories?

[Arkshine]

I can find a discussion about showing sub-categories in the sidebar (but no solution on what you want):

Nest subcategories under their parent categories in the sidebar

Subcategories should be nested in the sidebar. Things like this example will not work unless subcategories are nested: Ford –Driving –Purchasing GM –Driving –Purchasing The resulting display would be: Driving Driving Ford GM Purchasing Purchasing In the screenshot below, documentation is the parent category, while admins, faq, moderators, sso, sysadmin are subcategories. [Screen Shot 2022-09-20 at 1.01.42 PM]