Following through this post to set up CRM on prem to O365 Exchange to prepare for depreciation of the Email Router
One of the steps is to register the hybrid connector. When doing this it asks how many users to "order" even though there is no charge. Is this supposed to be a 1 to 1 match of how many users are set up in CRM and using O365 Exchange or just one to use the service?
(Also any other tips people that come across while setting this up that might not be mentioned in the article would be much appreciated.)