41. Arbitrators are selected to serve on the ACAS Arbitration Panel on the basis of their practical knowledge and experience of discipline and dismissal issues in the workplace. They are recruited through an open recruitment exercise, and appointed to the Panel on the basis of standard terms of appointment. It is a condition of their appointment that they exercise their duties in accordance with the terms of this Scheme. Each appointment is initially for a period of two years, although it may be renewed by ACAS, at the latter’s discretion. Payment is made by ACAS on the basis of time spent in connection with arbitral proceedings.