This is an Admin feature and requires Admin permissions. 

To better help your tasting room staff, you can customize the tiles and pages within the Shopify POS to your specific needs. Each winery has different needs and the flexibility of tiles and pages in the POS system allows administrators to change the interface to meet their individual winery's needs. 

Adding the legacy Members & Benefits Features

If you need to use the old Members & Benefits tile features, you need to add a new tile, called a "Website app" tile. Below is a video explaining how to add that tile. 

Update your POS Settings

Adding the new POS UI Extension tiles

For additional information please look at Shopify's support articles here 

• Changing your smart grid