As Rudedog states, its all seamless and automatic
Auto hold in the MK 7 Golfs is one of the best things ever, no invasive and seamless, you simply never have to touch it from day activate it, having just purchased a 7.5 again its one of features appreciate the most, as on my BMW, you have to jab quite hard on brake to activate auto hold when stopping at junctions, and have auto hold activated for handbrake to activate on leaving vehicle, if not car starts groaning telling you handbrake is not applied.