The problem, in one sentence
You sit down at a hot desk, plug your laptop into the dock, and instead of your two monitors working side by side you get the same picture mirrored on one screen, or an odd layout where the mouse crosses to the wrong side. Every morning, at a different desk, it happens again.
Why Windows does this
When a laptop connects to an external display, Windows often defaults to Duplicate, showing the same image on both screens rather than extending across them. Even when it does extend, it does not truly know how the monitors are physically arranged on this particular desk, so it guesses the left-to-right order and which screen should be the main one, taskbar and all. At a fixed desk you set that once and forget it. At a hot desk the desk changes but Windows' memory does not, so the guess is wrong more often than it is right.
The manual fix, and why it wears thin
You can sort it by hand every time. Press Win+P and choose Extend, then open Display settings, drag the monitor rectangles into the right order, tick Make this my main display on the correct one, and apply. It works, but it is a fiddly few steps to repeat every single morning, it is easy to get the ordering wrong, and it is exactly the sort of thing people quietly give up on, choosing to work on one screen all day instead.
The ten-second fix
ScreenSwytch does those steps for you. Open it when you dock, choose On a Desk, and it switches you out of mirrored into a proper extended layout. To get the order right it shows a big number on each monitor and simply asks you to tap the one on your left, then it makes that screen your main display. No display settings, no dragging, about ten seconds. When you leave, it sets you back to mirrored for the next person.
Because it uses Windows' own display features underneath, it works with whatever dock is on the desk, and there is nothing to pre-configure for each desk. If you want the detail of how it compares with Win+P, DisplayLink docks and other tools, see the comparison.
For IT: the same small problem, times everyone
On one laptop this is a minor annoyance. Across a floor of hot-deskers it is a steady trickle of my screens are wrong again support tickets, and staff time lost before the day starts. ScreenSwytch is built to deploy silently across a device estate through Intune, with per-seat licensing and a management console, so IT can roll it out to everyone and stop fielding the same ticket. There is a free 7-day trial to prove it on your own machines first.
Turn the daily display-settings fight into a ten-second fix.