Steps

1. Position the grid

Drag the blue box over the building area. Drag corners or edges to resize it.

2. Fine-tune (optional)

Scroll to zoom in for precise placement. Hold Space and drag to pan — anywhere, including over the blue box. Middle-drag and right-drag do the same, and plain dragging outside the box still pans. Adjust columns & rows with +/− if needed — auto-calculated by default.

3. Apply

Click Apply to save this floor’s grid.

4. Additional floors

Click Apply to All Floors to copy the grid position to every floor. Then switch floors with the dropdown and adjust the grid on each floor if the images aren’t aligned.

5. Finish

Click Done to apply and close.