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 Microsoft Office to Semi-Annual Channel
Keeping Track of Office 365 Updates, Update Channels and OneDrive Rings
Microsoft Office 365 Name Change – Blog – Dries Willems – Freelance IT Consultant
Manage Office 365 Update using SCCM 1706
Microsoft 365 Apps Get New Monthly Update Channel plus Channel Name Changes
Office 365 Channel Changing - Content Authoring - BigFix Forum
Easily controlling the Office update channel by using administrative templates – All about Microsoft Intune
Switch between Office update channels and enable Teams Preview features
Apps for Microsoft 365 update script - scho blog
Change Office 365 ProPlus Update Channel using ConfigMgr - MSEndpointMgr