How to create a Pending Worker manually from the Manage Job offer page

Job Offer is only used in the ORC when the job offer is signed(when the candidate is in the Offer accepted phase), the candidate then can be moved to HR as a pending worker, and the job offer contains info that is moved also to HR like Name, DOB, Position, Department, once the candidate is moved to HR as a pending worker then it cannot be reverted and go back as a candidate.