Viewport Input Settings

This window contains various settings for customizing Viewport controls.

To open it, select Viewport Input Settings from the Settings menu:

Select
The mouse button used for selecting objects in the Viewport.

Select Frame
The button for the border select feature.

Multiselect modifier
The modifier key for selecting multiple objects.

Select reverse hierarchy modifier
The key used for selecting reverse hierarchy (i.e. selecting every parent of the object).

Camera orientation tool show sides cube
The keys that align a user-created camera to the sides of the view cube.

Hide manipulators
The key for hiding Manipulators in the Viewport.

Manipulator move
The key for interacting with Manipulators.

Manipulators precision
The key that makes manipulators move ten times slower for higher precision.

Manipulator pull from anywhere
Keys for operating the selected part of the Manipulator (even when the mouse does not point at it).

Manipulator radius
Keys and mouse buttons for scaling the Manipulators.

Move pivot
The mouse button used for setting the pivot point.

Scene camera dolly
The keys for moving a (currently used) user-created camera back and forth.

Scene camera rotation
The keys for rotating a user-created camera.

Scene camera translation
The keys for translating a user-created camera.

Scene camera zoom
The keys for changing the zoom of a user-created camera.

Select rotation
?

Select tracks
When holding this key, clicking an object will select its Animation Track instead of the object itself.

Trajectory add fixed object
The keys for 'fixing' objects' trajectories: once an object is picked like that, its trajectory is visible even when the object itself is not selected.
(To remove this fixing, simply pick the object again.)

Viewort camera gestures
The keys used for quickly switching the viewport camera between the six fixed angles (top, bottom, right, left, front and back).

Viewport camera rotation
The keys used for rotating the viewport camera (the one that schows the scene by default).

Viewport camera translation
The keys used for translating the viewport camera.

Viewport camera zooming
The keys used for zooming the viewport camera in and out.

Reset to defaults
Restores every parameter to their default value.

Blender preset
Sets the Viewport controls to a scheme similar to the one in Blender.

Input Settings on macOS

If you are using macOS, be sure to set the Visor translation setting to Right Mouse + Shift + Alt.
Otherwise, you won't be able to control camera in the scene (this applies to Viewport camera and Camera Objects alike).