9c2787c1_he_Beat__A_Blog_by_PremiumBeat__Description
[Command] New Compound Clip [Shortcut] Option+G [UI Icon] N/A [Description] 
If you lasso several clips and select New Compound Clip, the clips will form one compound clip, which you can modify as one.
Final Cut Pro X Shortcuts - The Big Cheat Sheet - The Beat: A Blog by PremiumBeat
Description