If you aren't planning to pay the full amount at once, it's best to check with the landlord first to confirm they are happy with your proposed schedule.
If they are, you can make partial payments by bank transfer. The details will have been provided automatically once the contract was signed by everyone and will be available on the website.
Please note that debit card is the fastest means of payment so although the system can support part payments by bank transfer, the quickest way will be to pay the full amount at once by debit card.