In the Mobile and Desktop apps, when you have multiple extensions assigned to you and you switch from one extension to the other, the Voice mail reflects this change. However, the calls and recent activity do not reflect the extension but rather the user. It would be nice to have these reflect the extension from an organizational perspective.
For example, I have an employee who monitors two extensions, one for English and one for Spanish language callers. Having the call logs and recent activity separated by the extension, like voicemails, would help to identify the difference in callers.
Another Example is for extensions assigned to different locations.