I have a client that is using Azure AD, using SharePoint Online and Project online. They invite guest users to their directory and they use Azure AD groups for granting access to various resources. They have purchased 5 Azure P1 Licenses for their tenant when it was first set up. They really don't require any of the features the P1 or P2 license provides other than Group Access management. Over time they have invited more than 300 or so guest users in the environment and everything is working well, but the question came up as we are about to renew, Do they need to purchase more P1 licenses? Or is having the 5 sufficient for Group Access management? Based on this article, https://docs.microsoft.com/en-us/azure/active-directory/b2b/licensing-guidance you have a 1:5 ratio. So the question is, the fact it works with only 5 P1 licenses mean that for Group Access management the 5:1 ration does not apply, or is it one of those things where it works but they are not compliant?