Do you know the best way to find a phone number of a staff member?

❌ Bad way: Use the Global Address List in Active Directory, because you can’t update it from Outlook... Only an administrator can maintain the details.

Note: Good UI as it is easy to find inside Outlook.

✅ Good way: Use the Dynamics 365 (formerly CRM 2016) toolbar.

Note: We have a suggestion that Outlook should allow you to put the CRM URL into Tools | Options so this is better integrated.