Here is a strange little issue that you will run into when you run the Rule Deployment Wizard to place the CRM forwarding rule into each CRM user's mailbox.

At some point it will allow you to select the names of the people to deploy the CRM Rule to. When you click Next, it will do something magical and show you a list of people who have "passed" or something.

It is probably at this point where you see a list of users but the Next button is disabled.

This is where the issue lies. What the Rule Deployment Wizard has done is to show you a list of users it has approved to recieve the rule.  To make it actually work, you have to select the users to which you would like to see the rule deployed.

Once you select the users, the Next button activates and you can continue on with the process.