About a minute. Your loyalty card is live as soon as you finish, and you can change everything afterwards.
As your customers know it — it goes on their card.
The address your customers open, and where you sign in. It can't be changed later, so keep it short and recognisable.
This is how you sign in to your console — it opens your settings and your customer list, so don't share it. You can add separate PINs for your staff later.
Only so we can help if you ever forget your PIN. Never shown to customers.
The code you were given when you signed up for this service.