There may be a number of 'suitably qualified' FO's, however - the position should always have been filled by a competent Captain.
The issue is that the position involves 'conduct of discilplinary and capability hearings', which in my opinion automatically disqualifies any FO as it is inappropriate for an FO to be disciplining Captains!
Oh and good luck finding a competent Captain who will be willing to work for the DCP!