Layers

Keyboard shortcut
Function
CommandShiftNCommand-Shift-N
Create a new group.
CommandRightSquareBracketCommand-Right Bracket (])
Bring the object to the top of the group.
CommandLeftSquareBracketCommand-Left Bracket ([)
Send the object to the bottom of the group.
CommandRightSquareBracketCommand-Right Bracket (])
Bring the object up one level in the Layers tab.
CommandLeftSquareBracketCommand-Left Bracket ([)
Send the object down one level in the Layers tab.
CommandShiftGCommand-Shift-G
Place the selected objects in a new group.
CommandOptionGCommand-Option-G
Ungroup a group of objects so you can manipulate the objects individually.
ControlTControl-T
Make the object active or deactivate the object.
ControlSControl-S
Enable/disable the Solo button of a selected track.
ControlIControl-I
Isolate the selected group or layer.
ControlLControl-L
Lock/Unlock an object.
ArrowUpUp Arrow
Move up one level in the Layers tab.
ArrowDownDown Arrow
Move down one level in the Layers tab.
ArrowRightRight Arrow
Expand a group in the Layers tab.
ArrowLeftLeft Arrow
Collapse a group in the Layers tab.
CommandICommand-I
Import
CommandShiftMCommand-Shift-M
Add an image mask to the selected object.
CommandKCommand-K
Convert the applied behaviors to keyframes.
ShiftFShift-F
Open the Media tab and Inspector to reveal the source and properties of media objects.
KK
Clone the selected layer.