Duplicate a screen but no ability to change display parameters

[Youssra El Moussaoui]

Hi,I need help with screen duplication in Windows please.I have a "Minisforum" type computer (no user interface). This mini computer is linked to a tablet that serves as a display/user interface (Samsung S7 FE tablet).I connect the tablet to the computer via a USBC to USBC cable with the "SuperDisplay" application (available on PlayStore).So I have a screen extension on my tablet (screen 2) and a screen 1 that seems to be internal to the computer (I can't see it).I'd like to duplicate my display to see the same thing on my tablet and the mini PC. But when I open my display settings via screen

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