In 'Manager', select 'Settings' from the left-hand menu and then click 'Subscriptions and invoices'.
Here, you can enter your personal details, company information, and payment details. Once you have entered all of the correct information, we will then be able to bill you automatically, according to your billing schedule, so you won't have to worry about when your payments are due. You can read more about this, here.
If you would like the invoices to be sent to a different email address than that of the owner of the account you can fill in a specific email address here, e.g. firstname.lastname@example.org