Hi Alan Coleman
Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.
Select the invoice section where you would like the subscription charges to be billed.
From the available options, select the desired Azure Plan (such as the Microsoft Azure Plan). If no plans are visible, check that your billing account is properly configured to support Azure Plans.
For reference, please review this documentation :-
https://zcusa.951200.xyz/en-us/azure/cost-management-billing/manage/mca-section-invoice
https://zcusa.951200.xyz/en-us/azure/cost-management-billing/manage/create-customer-subscription
If you have any further queries, do let us know.
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