Katy Bourne, the re-elected Police and Crime Commissioner for Sussex, is due to read and sign an oath accepting the role today.
The job, as PCC, involves holding the Chief Constable to account for the Force's performance, on behalf of the public.
The Police and Crime Commissioner (PCC) for Sussex has admitted that the force is failing to meet response times for emergency calls in more than one in four cases.
PCC Katy Bourne says it is an "unacceptable situation" and she is working with Chief Constable Martin Richards to make improvements. Meridian presenter Sangeeta Bhabra interviewed the PCC about the issue.
Sussex Police and Crime Commissioner Katy Bourne has announced her intention to appoint Steve Waight as a full-time deputy.
Mr Waight will be paid an annual salary of £45,000, his appointment subject to a confirmation hearing by the Police and Crime Panel on Thursday.