NewMicrosoft Teams
Microsoft Teams: Enhanced delegated calling with delegate call access restrictions and join notifications
Microsoft Teams call delegation now includes new privacy controls allowing delegators to lock calls to prevent delegate access and optionally enable notification tones when delegates join. This is a feature enhancement with no required admin action.
Microsoft's description
Call delegation in Teams now includes new controls that give delegators greater privacy and control during active calls. Delegators can lock an ongoing call to prevent delegates from joining or resuming the call and can optionally enable warning tones that notify participants when a delegate joins or resumes a call.