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Adobe After Effects

Set the work area to the selected layers

CmdOptionB

Mac Desktop app After Effects desktop, default shortcuts

Practice this

To set the work area to the selected layers in Adobe After Effects, press Ctrl + Alt + B. On a Mac, press Cmd + Option + B instead.

Where it works: Timeline

Every documented variant

Variants of this shortcut
System	Environment	Keys
Mac	Desktop app	`CmdOptionB`
Windows	Desktop app	`CtrlAltB`

Where this comes from

Keyboard shortcuts in After Effects

Documentation checked on 2026-09-14. That is a documentation review, not a test run inside the application.

More Adobe After Effects shortcuts

Open the composition mini flowchart Tab
Trim the composition to the work area Cmd + Shift + X
Create a new composition from the selection
Go to a specific time Option + Shift + J
Go to the beginning of the work area Shift + Home
Go to the end of the work area Shift + End
Go to the previous visible item in the time ruler J
Go to the next visible item in the time ruler K

See every Adobe After Effects shortcut

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