Navigate to Desktop → Desktop Management → Desktop Management → Boot Selection Menu

Default desktop: The system that is selected by default in the boot selection menu.
Enable network connection: While in the boot selection menu, connects to the server and syncs related data — IP, access mode, computer settings.
Enable timeout: When this option is enabled, the selection menu will appear when the client boots. When disabled, the system boots directly without showing the menu.
Timeout duration: The default countdown for the boot selection menu.
Timeout action: Default behavior on timeout — enter the system, enter the ROM, or shut down, etc. Can be set to auto-shutdown: if no selection is made after the computer starts, it will automatically power off.