Minimize to tray
Instead of minimizing Custom Addressbook the usual way (as a box inside the Windows taskbar), you can minimize it so that it appears as a small icon in the Windows tray. The Windows system tray is the small area near the system clock.
To do this, just click Menu: File⁄Minimize to tray (inside Custom Addressbook) or press Ctrl M on your keyboard.
You can always restore the program by clicking on its tray icon.
Addressbook automatically saves any changes when minimized to the tray.
Sometimes Windows hides many of its tray icons (in that case the Addressbook tray icon might not be immediately visible). In that case, you should see the small tray icon arrow which can be used to expand the tray temporarily. Just click on the tray icon arrow to make all tray icons visible.