The GUI options affect the Central GUI (in the centre section).
Module Popup Window Timeout
This option sets the timeout period for the module parameter window that appears on the Central GUI when you touch a rotary control on the Central Control Section.
Display Central Metering
This option enables (or disables) the central metering area on the Central GUI. When enabled, it provides metering for the channels assigned to the main fader strips.
Show Central Metering on all Pages
This option enables (or disables) the central metering on all of the Central GUI pages, including the Main Faders display (and Strip Assign in mxGUI).
Show Side Panel on all Pages
This option enables (or disables) the Monitoring & Access/Assign side panel on all of the Central GUI pages, including the Main Faders display.
You can use it to disable the side panel when viewing the Main Faders display (so that the full width can be used for main fader operations).
Show Remote Desktop / Operate GUI Softkeys on Mirror Desk
This option applies to installations with a main and mirror desk.
When enabled, the remote desktop switching (RDP/VNC) and GUI soft keys operate on the mirror desk instead of the main desk.