As a Global Travel agency, selling dive destinations around the world, to divers around the world, we selected WeTravel as a booking platform as it allows payment in many different currencies, with both fee-free as well as convenient credit and debit card options for most currencies.
The Default Payment Screen
Initially, your payment screen might look like this, with the Payment Amount, Currency and Method will all be at their defaults.

Change the Payment Amount
Usually the amount makes sense: it is the first deposit, or the next instalment or the final balance. But you can choose to pay the balance off, or an amount you decide.

Change the Payment Currency
The default will work off your perceived IP location, which unless you use a VPN is usually, the country you are in. But you can choose to change this if you hold a card or an account in a foreign country or currency.

Change the Payment Method
If you have previously paid an instalment, it will default to that method. As it has in the example, the last payment was made by card. The method box is actually a dropdown, so you can click it to reveal alternate payment methods, for example in this case the fee-free BECS option in Australia, which is a one-time direct debit. Simply enter _your_ bank account details, and the amount you have selected will be deducted without any fees. This allows you, for example, to pay the deposit with a credit card to get the insurance cover, and then pay the bulk of the trip fee free.

If you have further question – please just raise this with your Consultant.