I installed Office 2016 from an MSI installer, but the updates apparently still happen via a Click-to-Run process. Susan Bradley has a nice tip here on changing from monthly to semi-annual updates (which should be more stable but still get security updates). This Microsoft blog post has a bit more detail. Before the update, in
Change Office 365 Update Channel Using SCCM Run Script 3
Microsoft is dropping 'Semi Annual Channel' feature releases for System Center
Change Microsoft Office to Semi-Annual Channel
How to Change the Update Channels for Microsoft 365 Apps
Microsoft 365 Apps update channels » IAMSYSADMIN
How to upgrade office 365 to the latest version using SCCM
Let users decide their Microsoft 365 Apps (Office 365) Release Channel
Keeping Track of Office 365 Updates, Update Channels and OneDrive Rings
Microsoft 365: Switch to monthly app updates for May 2022 planned – Born's Tech and Windows World
Change your Office 365 ProPlus Update Channel using SCCM - Jose Espitia
Microsoft to change Windows 10 release terminology - gHacks Tech News