You can add or delete clips, cut, copy and paste clips, or even Drag and Drop clips to and from My Library or other Playlists.
From the My Library page, open the Playlist you wish to edit.
Click Add Clips on the Command bar. The Add Clips dialog appears.
Select the clip or clips you wish to add.
Click Add Clips.
Click Close to return to the Playlist.
From the My Library page, open the Playlist you wish to edit.
Select the clips you wish to delete.
Select Delete from the right-click menu, or press [Delete] on your keyboard.
From the My Library page, open the Playlist from which you wish to copy clips.
Select the clip or clips you wish to copy.
Click Copy To on the Command bar.
Click Playlist. The Copy To Playlist dialog appears.
Select the Playlist to which you want to copy the clips.
Click Ok to add clips to the Playlist.
From the My Library page, open the Playlist you wish to edit.
Drag and drop the clips into the order you wish.