Payment can be made by a third party as it does not need to be the same person who fills in the form.
To transfer payment to a third party, complete the form except for the payment, utilise the option save & share this will allow you to type in the email address of the party you would like to pay for the application. To receive a copy of this link yourself you can also add your email address. There is provision for 2 email address to be provided.
Finally, instruct that party which will receive the email that they should follow the link within the email to payment section