You are on foot at the tiller — the machine walks with you. Line up square, forks level with the pallet base, tines fully in, then pick. Travel with the load just clear of the floor, horn before the crossing, and set the fork height before you drive into the racking, not after.
Desktop: W/S travel · A/D tiller · Q/E forks · Space pick / set down · H horn · C camera · M sound. Phone: left stick steers and travels, right stick lifts, PICK button on the right.
Licensing: a pedestrian-operated walk-behind stacker is not a forklift truck for high risk work licensing — Safe Work Australia's General guide for industrial lift trucks puts pedestrian-operated trucks outside the forklift licence class, and the model WHS Regulations' definition of a forklift truck carries the same exclusion. No licence does not mean no training: your employer must still train and authorise you on the machine you use. Requirements can differ between machines and states — confirm with your WHS regulator. A ride-on high-lift stacker is a different machine and does need a forklift licence.
The capacity plate in this game belongs to this fictional training machine, and the site rules to this fictional warehouse. Always work to the data plate on the machine you are operating and your own workplace's procedures.