How can I make First Name or Last Name required using VBS?

Summary:

I am trying to figure out how to make the First Name and Last Name fields required using VBS. When I am in Express Mode I only see this one section for Name but no where specifically for how to do this for First Name and Last Name.

Content (please ensure you mask any confidential information):

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

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