The computer implemented method 1, wherein the step of modifying a set of features associated with {HEAD ~ the selected user role} to form {TAIL ~ a set} of customized features comprises: 
to form
The computer implemented method 1 , wherein the step of modifying a set of features associated with { HEAD ~ the selected user role } to form { TAIL ~ a set } of customized features comprises :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH