Masking image lets you design in that specific area that has been masked. After the masking image is created, to display in the frontend it has to be enabled. In this article, you will get to know how to enable or disable masking images.
Login to Backend
Navigate to Product Designer -> Manage Masking Images.
You will land on Manage Masking Images. Here you have to select required Masking Images by clicking on the checkbox of that particular Masking images. Also, you can select all the masking images by clicking on the Select All drop down button.
After that you have to click on Actions drop down and select the required option among Enable/Disable.