If the orange light is on the auto hold button, then its turned on, if not press it once until it lights up, then you never have to touch anything ever again ! you don't have to touch the handbrake button, just drive and enjoy.
When you brake and come to a halt, the handbrake will come on automatically, when you want to drive off, just touch the accelerator, and away you go, you never have to think about using the handbrake.
I appreciate it goes against everything you will have learnt as a learner driver, but once you get used to it, it's amazing, though it does cause problems when you get into a car with a manual handbrake !