[nmglug] xander task suitability?

Hi Xander task suitability Debian 10. Objective Running two monitors individually controlled, First monitor "Jisti", second monitor, "imaginary teleprompter" (different resolutions xander should should support). "Imaginary telepromter" purports to support two monitors, but,upon further reading, on a restricted basis and not meeting my intent. Muddling througth this new firsttime assemblage > next would install a duplexer? Jitsi running fully independent functionality (keyboard mouse.Imaginary teleprompter independent  functionality separate keyboard and mouse. Q, A selected recommendation for an applicable non proprietary "duplexer"? software. Thanks, a