Glare on workstation

[Ctchef2000]

We have a workstation that is at a concession stand. When we flip the screen for the customer to sign the screen there is an enormous amount of glare on the screen from the sun behind them. We've tried several antiglare protection but haven't found any that work. Any suggestions??

[rcmck]

Possible you could get an umbrella over the area, maybe something like this with the clamp https://www.amazon.com/Sport-Brella-Versa-Brella-Swiveling-Umbrella-Midnight/dp/B09WCQMSXF/