How to move an internal candidate back to offer phase after HR processed>

Summary:

Is there a way to move an internal candidate who has already been processed by HR back to offer phase? The start date needs to be adjusted and a new offer needs to be sent. All options under 'Action' are greyed out.

Content (required):

The candidate is internal.

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

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