Signed-in users can also find this guide, with screenshots and a video, under Help in the app.
The visitor page works in English, French, Chinese, Spanish and Thai: the language picker is at the top.
Open the visitor page and type the building's name or street address.
Or enter the 6-character Location ID from the parking sign.
Choose the building, then follow the steps for that building (request, register, pay, or enter a trade code).