If you use one monitor most of the time, put that screen in front of you and angle the second beside it. If you genuinely divide the work evenly between both, center the pair around your working position. Start with your main task, then arrange the screens and controls around it.
Two monitors can look balanced while the work itself is lopsided: the spreadsheet you spend an hour editing may sit off to one side, while a mostly idle inbox occupies the center. This guide helps you choose a useful layout for the work you actually do. For chair, feet and general desk setup, start with our desk ergonomics checklist.
First, identify the screen you really use most
Open a representative task rather than arranging two empty desktops. Notice where you read, type and make decisions, and which screen supplies only occasional information. Your main display is the one doing most of that work, regardless of its size or the number assigned to it in computer settings.
For example, writing a proposal with a reference document nearby usually has a clear primary screen. Comparing two drawings side by side may be much more evenly divided. An inbox that receives notifications is not necessarily a primary task just because it remains open all day.
This is a practical planning exercise, not a requirement to measure every minute. If the answer changes between morning and afternoon, your window arrangement can change too. You do not have to keep a long reading task on a side screen simply because that is where the application opened.
Choose between a primary-screen layout and an evenly shared pair
One screen carries most of the work
Place the primary monitor directly ahead. Bring the secondary display alongside it and angle it toward you. The Canadian Centre for Occupational Health and Safety's monitor guidance distinguishes this arrangement from equal use, where the pair belongs in front of the user.
Think of the side screen as a reference space. If a reference becomes the main job—for example, a quick PDF check turns into a lengthy review—move that window to the central display. Moving the task is often a simpler first adjustment than rebuilding the entire desk.
You work across both screens about equally
Position the displays adjacent to one another, centered around your working position, with their edges meeting and the screens angled inward. CCOHS recommends a shallow semicircle, similar screen heights and roughly an arm's-length viewing distance as starting points. It also advises adjusting text size when comfortable viewing distance makes text too small.
The important decision is what “equal use” means in your actual workflow. Briefly checking a chat window beside a full-screen editing task is different from comparing two documents throughout the session. Choose the layout that describes the session you are about to do.
Keep the keyboard and mouse connected to the main task
After moving screens, check the input devices again. UC Davis Safety Services' dual-monitor guidance places the keyboard in front of the primary display when one screen dominates, or centrally between the displays when use is equal. Monitor arrangement and typing position need to work together.
A second monitor stand can claim space previously used by the mouse, notebook or keyboard. Before moving those working tools farther away, try relocating something used less often. A charging dock or spare number pad may not need the same central position as the controls you use continuously.
UC Davis suggests a document holder in line with the main display, or centrally for equal use. Keep the material you repeatedly consult visible. For input-device detail, see our guide to mouse reach, armrests and calls.
Give a laptop used as a second screen its own setup decision
A laptop beside an external monitor introduces a choice: will you type on its built-in keyboard, or use separate controls? Raising the laptop screen while continuing to type on the raised keyboard does not separate these two jobs.
The UK's Health and Safety Executive's display-screen guidance recommends a firm surface and separate keyboard and mouse for prolonged portable-computer use, with the display positioned for comfortable viewing. Use a stable support suitable for the laptop and keep its ventilation clear according to its manufacturer's instructions.
Decide what belongs on the smaller screen before filling it with windows. A reference outline may work differently from a dense spreadsheet. If the smaller display does not make the task easier to read or organize, using the external monitor alone is a reasonable option; a second screen is not a requirement.
UC Davis notes that differently sized displays can make height alignment difficult. Its starting point is at or slightly below eye level, lower for bifocal or trifocal users. Check what lets you read comfortably.
Match the computer's display map to the physical desk
The physical arrangement and the computer's display settings are separate. If the pointer leaves the wrong edge of a screen, check the software layout before assuming the desk needs rearranging.
In Windows 11, Microsoft's multiple-monitor instructions explain how to identify displays, drag their representations into the same order as the real screens, apply the arrangement and test pointer movement. “Extend” spreads the desktop across screens; “Duplicate” shows the same content on both. These settings affect how windows move, not which physical screen should sit in front of you.
Then open the actual text-heavy application you use. HSE recommends readable text at a comfortable working position and managing reflections, including those from windows. Check both screens: adding another display may put part of the workspace in a different relationship to daylight.
Try the arrangement with real work
Complete a short, familiar task and notice what makes you interrupt it. Are you repeatedly searching for a window? Does a supposedly secondary document keep becoming the main reading task? Is the keyboard still aligned with the work you spend the most time doing?
Use those observations to make one clear adjustment, then try again. The aim is a workable arrangement, not a photographically symmetrical desk. These are general setup guidelines, not evidence that a particular layout prevents or treats symptoms. For persistent discomfort or a workstation that cannot accommodate your needs, seek an appropriate workplace assessment or qualified advice.
A second screen also does not change the need to vary screen work. HSE recommends short, frequent breaks or changes of activity. Our screen-break guide addresses that separate scheduling problem. ThermoLuma's after-desk comfort routine is an optional wind-down once work is finished; it does not replace workstation adjustments or breaks.
Frequently asked questions
Should I face the gap between two monitors?
Only when the work is shared roughly evenly across the pair. If one screen carries most of the task, use that screen as the center of your working position.
Do both monitors need to be the same size?
They do not have to match for you to organize a useful workflow. Different sizes make alignment less straightforward; judge the setup with the applications you actually use, rather than by matching the outer frames alone.
What if my main task changes during the day?
Move the active application to your primary display, or reconsider an evenly shared layout if the new task consistently uses both. Treat the arrangement as a working choice you can revise.