A user at the host computer creates specifications for controlling {TAIL ~ the operation} of the computers in {HEAD ~ the workgroup} 
A user at the host computer creates specifications for controlling { TAIL ~ the operation } of the computers in { HEAD ~ the workgroup }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD