How to make the field read only - Job Family using Page composer

Summary:

How do we make the fields read only using page composer, Job family

Content (required):

I have been trying to make the fields read only using page composer and haven't found out the options in the editor.

Adding a screenshot for easy reference and grateful if someone can help in achieving this solution.

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

23A

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