To manage categories for an issue, click on “Magazine Category” tab in left menu as indicated in screenshot below:
For each category, you can specify following information
The name you specify for the category is how it appears on your site.
The “slug” is the URL-friendly version of the name. It is usually all lowercase and contains only letters, numbers, and hyphens.
Specify the parent of the particular category (if any)
This is content you would like to display about the category. This information will be displayed below the category name and gives you the opportunity to describe what the category is all about.