Using permits or passes can be a useful way to book and use longer term or discounted parking. 

To start, tap on the season passes box on the app homepage. Then search for the car park or tap on any shown on the search list.

This will show you a list of available passes in the car park. Tap on any to view more details.

At the purchase screen,  select the Start Date, this will then calculate the end date and a price. If the pass is a Pay As You Go, you will not need to pay anything upfront as you will be charged whenever you leave a car park.

Then you will need to select a payment method. Pay As You Go passes also need a payment method selected as this will be used when you leave a car park.

Once you have completed these steps, click Add Pass or Buy Pass.

You will then get confirmation that the pass has been added to your account. It can be viewed from My Passes.