https://docs.magento.com/m2/ce/user_guide/catalog/categories-category-products.html

Products in Category

The Products in Category section lists the products that are currently assigned to the category. The search filters at the top of each column are used to add and remove products from the category.


Category Products
  • Workspace Controls

    CONTROL

    DESCRIPTION

    The checkbox in the header of the first column can be used to select or deselect all products.

    The control in the first row determines the type of search, and can be set to include any record, or only those that are either assigned or not assigned to the category. The checkbox in the first column of each row identifies products to be added to the category. Options: Yes / No / Any

    Search Filters

    The filter controls at the top of each column can be used to enter specific values you want to either include or omit from the list, depending on the Select All setting.

    Reset Filter

    Clears all search filters.

    Search

    Searches the catalog based on the filter criteria, and displays the result.