Two main Optimised Shear (OS) scenarios were exploited on JET in order to generate Internal Transport Barriers (ITBs) [1]. In 1st scenario (Fig.1), an ITB is generated by high power NBI+ICRF applied to the plasma with a monotonic safety factor q(r)>1. In 2nd scenario (Fig.1) an ITB can be triggered at smaller power of NBI+ICRF, when a nonmonotonic q(r) is generated by LHCD. Figure 2 shows the relevant q(r) - profiles.