Instead of users adding recipes themselves it’s possible to use a link to save a particular recipe to their collections inbox. This can be useful for links in a newsletter or cookbook, for example.
To do that, go to the page that includes your collections shortcode and append ?add=123 at the end, with 123 the recipe ID you want to add. For example, following this link to add the “Basic Sushi” recipe to your inbox on our demo site:
https://demo.wprecipemaker.com/recipe-collections/?add=68
The easiest way to find the recipe ID is through the WP Recipe Maker > Manage page.