When you open a job posting that an external candidate has applied for, the Hire button on the Manage Application page is active. Clicking the Hire button changes an external applicant's status from applicant to employee in Quadrant Self Service and Quadrant.
After you click the Hire button, it's grayed out for all other positions the candidate has applied for. When an external candidate creates a profile in Quadrant Self Service, a record is also created in the Applicants menu in Quadrant. When an external candidate is hired in Quadrant, their applicant profile changes to an employee profile. However, their employment information and positions must still be entered manually in Quadrant.