Dell UltraSharp 49 U4924DW 49" WQHD Ultrawide Curved Monitor - Manual (Page 75)

Operating the monitor
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Lock With the control buttons on the monitor locked, you
can prevent people from accessing the controls. It
also prevents accidental activation in multiple
monitors side-by-side setup.
• Menu Buttons : All joystick functions are locked
and not accessible by the user.
• Power Button : Only the Power button is locked
and not accessible by the user.
• Menu + Power Buttons : Both the joystick & the
Power button are locked and not accessible by the
user.
The default setting is Disable .
Alternative Lock Method [for Menu/function
buttons]: You can also press and hold the joystick to
the up or down or left or right for 4 seconds to set
the lock options.
NOTE: To unlock the button(s), press and hold the
joystick to the up or down or left or right for 4
seconds.
Reset Menu Resets all settings under the Menu menu to the
factory preset values.