Exactly how to move around any scene, on mouse or touchpad
Heads-up: Some Viewport tools (e.g., Section, Transform gizmo, Select Primitives) “capture” mouse/touchpad clicks.
If your usual orbit gesture stops working, press and hold ALT (Windows) or ⌥ Option (macOS) while you drag to force camera rotation.
Rotate (Orbit) the Camera
| Device | 
Action | 
| Mouse / stylus | 
Click-hold Left Mouse Button (LMB) and move. | 
| Touchpad | 
Press and hold, then slide a finger. (Add ALT/Option if another tool interferes.) | 
 
 
Pan (Move) the Camera
| Device | 
Action | 
| Mouse | 
Hold Right Mouse Button (RMB) and drag. | 
| Touchpad | 
Use two fingers to drag. | 
 
 
Roll the Scene (tilt horizon)
| Device | 
Action | 
| Mouse | 
Hold Ctrl + LMB and drag left/right. | 
| Touchpad | 
Ctrl + press and drag with a finger. | 
 
 
Zoom In & Out
| Platform | 
Action | 
| Desktop (mouse) | 
Scroll wheel forward = zoom in, backward = zoom out. | 
| Touchpad (desktop & web) | 
Pinch in = zoom out, stretch = zoom in. | 
| Web touchpad — alt gesture | 
Two-finger slide up = zoom out, down = zoom in. |