Magento Open Source 2.1.x

Creating Categories

The categoryA set of products that share particular characteristics or attributes. structure of your catalog is like an upside-down tree, with the root at the top. Each section of the tree can be expanded and collapsed. Any disabled or hidden categories are grayed out. The first level of categories below the root typically appear as options in the main menu. You can have as many additional subcategories as you need. Categories can be dragged and dropped to other locations in the tree. The category ID number appears in parentheses after the category name at the top of the page.

Category Tree