There are many ways to create a category in AxCMS.net - manually via GUI, WebDAV, programmatically via API or import from XML.

1. The Classic: Manually via GUI
2. Import Categories from an XML File
3. Category Creation Box
4. WebDAV
5. Adding new categories via SQL
6. Cloning
7. Programmatically via API
8. API: Importing XML file programmatically
9. API: Using AxCategoryAdapter

Read on: http://help.axcms.net/en_help_cms_dev_categories_ways_to_create.AxCMS