To claim your tiles, click above. Then click a single square, or hold the left button and drag to take in more. It works out the cost and lets you put that ground in progress for purchase.
If a postcode tile inside your ground is already taken, it is deducted. Otherwise it comes with your purchase: you cannot buy a banner tile without its postcode tile while that one is still available.
This is a demo ahead of the launch on Giving Tuesday, 1 December.