Open the "Content" column on the left side of the page, click "+", and select Create catrgory or document.
If you need to categorize, you can create multiple columns, and continue to create columns or articles under the column level;
If you don't need to categorize, you can also create a document directly.
*Articles need to be placed in the column and published before they will be displayed on the front-end display screen
Create a category: Click "Create Category", fill in the column icon, status, name, URL, and description in order, and then click "OK".
(* is required, others can be filled in or not)
Create an document: Click "Create document" to create an article.
Create a column or article under a column: Click "+" on the right and select "Create category" or "Create document".