Calendar, iCloud Drive on a Locked-down Corporate Mac

As you can see in my post back in Aug, my scenario is different from the original poster.

My laptop is a BYOD device. I can install any software I want, including Agenda. An interface to Outlook would solve my problem, I believe.

I understand the constraint of resources and priorities. Unfortunately, myself and others may have to move on from Agenda since s key component of the platform, calendar and task integration, no longer works for us.