Ok, so now that we ALL (including Garmin) now knows about Android Enterprise, can the DEVELOPER Team at Garmin enable the API to allow notifications from the Android Enterprise Work Profile to be displayed…
Workaround have installed the same application ( just installed not configured) in both sections Personal and Work and then added in Garmin App Notification added the app.and worked!!
I confirm the workaround works. Just Install your work apps (Teams, Outlook) from Play Store into your personal profile, no need to even open them, and enable in notifications. Thanks for the tip.