We *MUST* have the ability to set up webinar providers besides On24. The documentation (https://docs.microsoft.com/en-us/dynamics365/customer-engagement/marketing/events-settings#webinar-providers) and the software itself clearly show the ability to add others regardless of the "note" placed in the docs. When we evaluated D365 for Marketing for adoption, this limitation was not present. Now that we've committed to it, we have no option for working with our current webinar provider. We will not and cannot switch provider.