Yes, you can.
Follow these steps to edit a category or subcategory:
- Click the Main Menu.
- Go to the Support tab.
- Click the Articles module.
- Click the Settings button on the top right of the screen. The Help Center Settings page will appear.
- Click the Categories tab.
- Hover over the category that you created previously.
- Click the Edit icon.
- Make the desired changes.
- Click Update.
The category or the subcategory will be updated.
To know more about Help Center, click here