To manage categories for an issue, click on “Magazine Category” tab in left menu as indicated in screenshot below:

Categories within the Issue

For each category, you can specify following information

Name
The name you specify for the category is how it appears on your site.

Slug
The “slug” is the URL-friendly version of the name. It is usually all lowercase and contains only letters, numbers, and hyphens.

Parent
Specify the parent of the particular category (if any)

Description
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.