According to NEC gamma 2.2 doesn't make sens with LCD monitors. They recommend the L* setting.
Maybe someone in Europe with that version, but not with the US software, pick gamma 2.2.
J. you can modify a setting and save off a custom target to use so yes, start with Broadcast Video and modify to your needs or just make a new custom target and set as you wish and save.
Cd/m2 is the unit of measured luminance (Candela's per meter squared).