code for determining a first set of candidates from {HEAD ~ the plurality} of {TAIL ~ candidates} who have completed online certification 
code for determining a first set of candidates from { HEAD ~ the plurality } of { TAIL ~ candidates } who have completed online certification
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH