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