Changing the zoom setting is not persistent for reading messages. To make the zoom level persistent, you need to use an add-in or a macro. See: http://www.slipstick.com/outlook/adjust-outlooks-zoom-setting/ Regards, Steve Fan TechNet Community Support It's recommended to download and ins...
I would take a look at the Hybrid Calendar video which goes a bit in depth on this topic. However in short... we only support MS Teams invites that are Cisco VIMT (CVI) with Hybrid Calendar, so 3rd party CVI invites would not work (however WebRTC