Protected Value sets - Manage Values

Summary:

We have a valueset which is in protected status and has the manage values button greyed out.

Is there a way to unprotect this value set and enable it for managing the values?

The user who created it, is no longer with the company

Content (please ensure you mask any confidential information):

We would like to be able to add values to this set and the manage values button is disabled

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

Oracle Cloud 13

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