The curation of products works on a per storefront basis and from there can de decided on categories and pages.
From the main Admin CMS, navigate and click on 'Stores' on the left hand menu column.
Then choose which storefront you wish to arrange the curation. By clicking on the blue hyperlink store name to open up the storefront configuration as in the below window.
Click the 'Curation' tab to open up the curation window below.
Begin by selecting from the drop down menu ( See example below ) the category page you wish to load the products in order to curate.
Once the category has been chosen, next which page from the drop down menu, if there is more than one page of products to chose from.
You can also use the filter tabs if there are a specific product in a long list of products you wish to select, or alternatively the option to select from the 'Sort by' drop down menu.
With the resulting page of products from the criteria chosen, you also have to option to use the checkbox and apply the action filter, of the options shown below, before clicking 'Apply'
Once all options have been selected , pages chosen, and category selected, you have the ability to click and drag products from the list up or down accordingly and place them as you wish, as shown in the example below.
The action allows for the products to move in conjunction with the products on the website in real time.