How to activate main window of 4t Tray Minimizer

Use one of the following ways:

double-click on the 4t Tray Minimizer icon in the system tray (by default)
activate 4t Tray Minimizer tray menu and select Main window item
press Activate 4t Tray Minimizer window hot key (Ctrl+Alt+T by default)
select 4t Tray Minimizer item in its program group. If 4t Tray Minimizer is already running, it will be activated.