If you want to extend Microsoft 365 Copilot usage with pay-as-you-go billing, you can use Visual Studio subscription with Azure credits as the billing method, as long as the benefit is already activated and available in the correct tenant. This is useful when you want to enable additional credits for services such as Copilot Cowork, the Work IQ API, or managed applications. What this setup does Within M365 Admin center > cost management, you can create a spending policy and point it to an Azure billing method.

If you are building with Copilot Studio beyond the included M365 Copilot license entitlements, you eventually need a pay-as-you-go billing plan for additional usage specially for Github Copilot Harness which requires credits even for development. One practical option is to use the Azure credits that come with a Visual Studio subscription, provided your subscription benefit is active and the offer supports the required resources. This is useful when you want to experiment with Copilot Studio.

Permissions for shared channels should be managed from Teams and the channel itself, not by manually changing permissions on the underlying SharePoint site. That said, the background synchronisation between Teams shared channels and SharePoint can occasionally fail. When that happens, users who are correctly listed as channel owners or members may still be unable to search, open, or work with the content stored in the connected SharePoint site. I ran into this after a migration that involved large-scale membership updates.