Hi Grim. I'm Greg, 10 years awarded Windows MVP and Volunteer Moderator, here to help you.
To extend multiple monitors on Samsung Go Book try these fixes:
https://www.att.com/device-support/article/wire...
https://www.reddit.com/r/GalaxyBook/comments/vy...
https://www.reddit.com/r/GalaxyBook/comments/pf...
https://www.youtube.com/watch?v=UmbkWKPERKk
https://www.youtube.com/watch?v=Yyq84m3CmSA
For further help contact Samsung Support or their forums:
https://www.samsung.com/us/support/
https://us.community.samsung.com/t5/Samsung-Com...
Feel free to ask back any questions. Based on detailed results you post back I will have other suggestions if necessary.
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