How can I setup the "response visibility" field of the negotiation page to "Open"?

Summary:

Standard negotiation page - set response visibility field to open

Content (please ensure you mask any confidential information):

I have to setup the response visibility field to Open. Now I can choose between only two options: sealed or blind.

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

23C

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