For more details see the Automatic Categories for Magento 2 extension page.
Employ automatic categories extension to manage your catalog pages more efficiently and faster. Set conditions to run sales and seasonal campaigns, tailoring particular product listings for your purposes.
Automatic Category - to enable the functionality of the extension, set to Yes.
Once you enable the Automatic Category, the Product Conditions and Products Merchandising sections will be added.
In the Product Conditions section, you can set the list of conditions (or conditions combination). Basing on these conditions, the extension retrieves the products to the automatic category automatically.
Once you set the conditions, click the Apply Conditions button. Go to Products Merchandising section to see the products that are automatically retrieved by the applied conditions.
Import conditions from - To import the conditions of one particular automatic category to another, click a dropdown and select the needed automatic category, which conditions you want to reproduce. The conditions will be retrieved to the current automatic category, afterwards you can modify them.
Sort - Select from the dropdown the preferable way of automatic ordering of the product listing.
Search Products - Find products within one current automatic category selection by SKU or name. Employ a search box at the top of the products merchandising listing.
Drag-and-drop the items the way that is aligned with your current marketing needs.
Move to Top - simply click the button to send a particular product to the first position in the product listing.