Find any action with ⌘K

1. Press ⌘K, or click Commands at the top of the editor.
2. Type a few letters. Plain words work too: "voice over" finds Record voiceover, and "product hunt" finds Export launch pack….
3. Use ↑ and ↓ to choose, then press ↩. Press esc to close.

Each action shows its keyboard shortcut, if it has one, so you learn them as you go.

See every action in the commands reference.