The Hawk T1 is equipped with a front and rear cockpit, and both cockpits are fully-functional and configured just like the real aircraft. The front cockpit is used for solo flight and the rear cockpit is used by a flight instructor or passenger (for example ground crew). The rear pilot can be toggled on/off using the EFB tablet option.
Cockpit camera presets allow you to quickly jump between the two cockpits. From the MSFS camera window, select Cockpit > Pilot and then select either PILOT (front cockpit) or COPILOT (rear cockpit).