If you’d like to bulk edit multiple recipes (e.g. you’d like to add a new site to multiple recipes at once), you can multi-select using the checkboxes next to the recipe names on the left hand side.
You'll see that "Assign to Site(s)", "Change Status" and "Delete" become available in the top right.
Click "Assign to Site(s)" and then "Add" and tick all the sites you'd like these recipes to be assigned to.
Similarly, click "Change Status" and the select whether to Activate, Draft or Archive the recipes.
Click "Delete" to delete the selected recipes permanently.