Increasingly, people use two screens in their normal work. In some specialist work environments (e.g. control rooms), several screens may be used. Two or more screens are often useful when the person uses multiple software applications at the same time, helping to segregate work between screens and reduce the number of mouse operations. Multiple screens may also be used when people work together in groups.
When working in groups, you should agree on the position and adjustment of the screens for the different people and agree on the uses and positions of the keyboard and mouse.
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