how to move mouse left to right between two extended screens

Arrange the monitor tiles in Windows 11 to match their physical left-to-right positions so the pointer can move directly between adjacent screens.

1. Right-click an empty area of the desktop and select Display settings.
2. Under System > Display, select Identify. A number appears on each physical screen.
3. In Rearrange your displays, drag the numbered tiles into the same order as the monitors on your desk—for example, 1 | 2 | 3.
4. Align the tiles so their edges touch. If one tile is above or below the others, the pointer can cross only where their edges overlap.
5. Select Apply.
6. Move the pointer across each shared edge to test the arrangement. Windows supports dragging these display tiles specifically to control how the pointer moves between screens.^1^

The display numbers do not need to be numerically ordered. If your physical arrangement is 2 | 1 | 3, arrange the tiles that way. The monitor tiles—not their assigned numbers—determine the pointer path.^2^

If necessary, press Windows key + P and select Extend so the desktop spans all three displays.^1^

References

1. Windows 11
2. How to change direction of mouse moving across multiple monitors - Microsoft Q&A