In October, 2018, we announced a plan to offer the Skype for Business desktop app on Mac as our web-downloadable meetings client instead of Skype Meetings App, starting in December. Due to feedback...
Updated Feb 28, 2019
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I apologize for the delay in responding; I have been out of the office for a few days.
Phil Lyle and Balu N Ilag - The SfB desktop installer does support installation without admin permissions. We use the standard Apple installer, which has the following option:
Destination Select page of Skype for Business installer
A standard user can select Install for me only and no elevated permissions are required. If Install for all users of this computer is selected, admin permissions are needed to access the installation folder. The Apple installer defaults to the option for all users, and they don't offer a way for us to override it.
One thing that we discovered is that the Apple changed the behavior of their installer in Mojave so that the Destination Select page is skipped by default in the installation. When you click Continue on the License page, the installer moves to Installation Type. You have to click Change Install Location to see the Destination Select page.
Installation Type page of Skype for Business installer
We are still researching this, but it appears that Apple does not provide a way for us to override these default behaviors. However, Mac users who do not have admin permissions would need to to this for all software they install, so it should be familiar.
Phil.