Add an empty group to the project

Shift-Command-N

Add a camera to the project

Option-Command-C

Add a light to the project

Shift-Command-L

Add a drop zone to the project

Shift-Command-D

Add a rig to the project

Control-Command-R

Move the selected object to the top of the Layers list

Shift–Command–Right Bracket (])

Move the selected object to the bottom of the Layers list

Shift–Command–Left Bracket ([)

Move the selected object up the Layers list by one level

Command–Right Bracket (])

Move the selected object down the Layers list by one level

Command–Left Bracket ([)

Group the selected objects into a new layer

Shift-Command-G

Ungroup a group of objects so you can manipulate the objects individually

Option-Command-G

Make an object active or deactivate an object

Control-T

For an audio track, enable/disable the Solo button of the selected track; for an object, solo the object

Control-S

Isolate the selected group or layer

Control-I

Lock/unlock an object

Control-L

Unsolo only the video portion of a file that contains video

Control-Shift-S

Convert a 2D group to 3D, or convert a 3D group to 2D

Control-D

Add an image mask to the selected object

Shift-Command-M

Add a keyframe (to the last modified parameter for the selected object)

Control-K

Convert the applied behaviors to keyframes

Command-K

Convert a simple shape to a complex shape (with editable control points)

Option-Command-B

Make the selected object the cell source for a particle emitter

E

Replicate the selected object

L

Clone the selected layer

K

Open the Media list and Inspector to display the source and properties of media objects

Shift-F