How should a minimize-to-tray application behave?

1. How do I minimize applications to tray?
2. What does minimize to system tray do?
3. How do I minimize Outlook to tray?

How do I minimize applications to tray?

Press Alt + F1 and that window will minimize to the tray.

What does minimize to system tray do?

To interact with a program in the system tray, select an icon with the mouse and double-click or right-click the icon. When minimizing the program after using it, it shrinks back into the system tray instead of into the main part of the taskbar.

How do I minimize Outlook to tray?

Minimize to the Notification tray

To minimize Outlook to the notification area, click on the tray icon and choose "Hide when Minimized" to enable (or disable) the feature. To open Outlook when it's hidden, either double-click on the icon or right-click and choose Open Outlook.