How to personalize a pop up using sandbox for "create work definition"?

Summary: We want to do personalization on create work definition page for some fields with particular role.

Content (required): In Sandbox under "structure" we are trying to edit popup. on clicking on add icon there is no popup related details under structure.

Supply chain execution>>> Work definition>>>Manage Work definition>>>Click on add icon (Please refer attached screen shots).

Version (include the version you are using, if applicable): 21D

Code Snippet (add any code snippets that support your topic, if applicable): NA.