How to add short descriptions?

Go to Store Admin   –>   Settings –>  Metafields –> Click Products

Now click on “Add definition” button and Select content type “Text”

Add data same as below

Name : Short Descriptions
Namespace and key : meta.short_des ( For Optimal theme must use “my_fields.short_des” )

Now go to your products and Scroll down to “Metafields” and Add text in short description and Click Save