This feature is available within your Store Manager control panel.
Login to access your control panel
Catalog Visibility:
Sets where and how each product is accessed and seen on the website.
Catalogue Visibility can be set whenever a new product is added using the drop-down labeled ‘Catalog visibility:’ Catalogue Visiblity can be changed by selecting the edit button next to the product and making the changes under the ‘Catalog visibility’ drop-down. Don’t forget to press the Submit button at the bottom right of the screen to save the changes.
The options shown are:
Password access can also be set within your WordPress product editing area.