Size against the desk and the monitor
Take the desk width as the ruler and aim for an arrangement around two-thirds of it, which puts a 60 inch desk at roughly 40 inches. That is narrower than most people expect, but a wall wider than the desk turns the workstation into a display and makes the desk look undersized beneath it.
The monitor then removes the middle of that band. Measure the monitor at its highest position and full tilt, not where it happens to sit today, because arms and risers move. If the screen occupies 24 inches of the desk's centre, the layout choice is a single row above it or two shorter columns on either side.
The band above the monitor
Measure from the floor to the top of the monitor at its highest setting, then leave 4 to 6 inches before the lowest frame edge. Worked through: a desk surface at 29 inches with a monitor whose top reaches 50 inches gives a lowest frame edge of 54 to 56 inches, which is close to the conventional hanging band and usually a comfortable coincidence.
Check the ceiling before committing to two rows. From a 55 inch lowest edge, two rows of 11 x 14 frames at 2 inch gaps reach 85 inches, leaving 11 inches of wall on a 96 inch ceiling. That is workable; three rows is not. A single row of 16 x 20 frames finishing at 75 inches gives a calmer result with more wall showing.
What the camera actually frames
A webcam sees a narrow band behind your head, roughly shoulder height to somewhat above your head, and much less width than the room feels. The reliable procedure is to open the camera preview, tape plain paper rectangles where frames would go, and look at where they land relative to your head on screen rather than guessing from the room.
Two failure modes show up immediately. The first is a frame edge that appears to grow out of the top of your head, fixed by shifting the whole arrangement sideways by half a frame width. The second is glazing that bounces your monitor's light straight back at the camera, fixed with matte or non-reflective glazing on the two or three pieces inside the camera's field.
Keep it calm enough to work in front of
Limit the group to three to five pieces with a single palette and gaps of 2.5 to 3 inches. A dense salon arrangement in a working sight line competes with the screen every time you look up, and it is far more tiring in a room you spend eight hours in than in a room you pass through.
Be aware of peripheral vision as well as direct view. High contrast pieces at the far edges of your seated field catch the eye during focused work, so put the strongest image on the centre line where you choose to look at it and keep the outer positions quieter. This is the opposite of the advice for a hallway, where movement makes contrast an advantage.
Shelves, cable trays and outlets
A floating shelf above a desk is a hard boundary, so treat it as a furniture zone in the plan and build above it, aligning the arrangement's outer edges with the shelf ends. That alignment is the single strongest move available in a small office, because it converts two separate objects into one composition.
Mark every outlet, switch and cable tray as its own zone. Cables often run vertically above and below an outlet, so treat that strip as a no-drill zone until the wall has been checked, and have the wall construction and any services inside it verified before drilling near a run. Do not guess where a cable goes based on where it enters the wall.
Behind you or beside you
If calls matter, the wall behind your chair is the one that gets planned and the wall you face is the one that gets the personal pieces. That split solves the conflict cleanly: the camera wall stays sparse and evenly spaced, while the wall in your own sight line can carry family photographs, notes and objects without being judged by anyone else.
If you rarely appear on camera, reverse the priority and put the arrangement where you see it. The trade-off is real: a wall optimised for a webcam tends to be duller in person, because even spacing and low contrast are exactly what makes a background unobtrusive.
Plan, print and check from the chair
Enter the wall dimensions, add the desk, shelf, outlets and cable route as zones, then place frames and use align and distribute to keep the row true. Lock the zones, run constrained auto-fit if you want the remaining pieces positioned automatically, and use undo freely while testing options.
Print the install sheet at 100 percent, confirm the calibration bars measure true, and tape the templates. Then sit in your chair and look up, and join a call with yourself to see the same wall as a camera does. Both checks take minutes and catch problems that no amount of standing in front of the wall will reveal.