All in the billing portal, from Manage subscription.
Payment method
Under Payment method, choose Change, then Add new card, and enter the details.
Remove the old card only after the new one is confirmed. A subscription with no valid card fails at the next renewal, and a failed renewal eventually stops your screens.
Billing contact details
Under Billing information, choose Update information.
This is where the invoice email address lives, along with the company name, address, and tax details that appear on the invoice.
Check this early. The default is whoever signed up, which is usually not the finance address, and invoices going quietly to a personal mailbox is how a renewal gets missed.
Invoices
Sent automatically to the billing email after each charge, and past invoices are downloadable from the portal’s invoice history.
Purchase orders and other arrangements
Purchase orders, annual invoicing, a different billing entity, or consolidated billing across linked workspaces are all possible and none of them are self-service. Contact support and we will set it up. Custom billing arrangements are an Enterprise feature.