Editing keyframes by using the clip effect menu

1. Delete the MultibandCompressor effect.
2. Open the clip effect menu by clicking Channel Volume.
3. Select Left.
4. Drag the yellow line, which now represents the left channel volume, up or down (right or left)to change the left channel's volume.
5. Click the Show keyframes button on the left side of the audio track, and then set it to Show clip Volume. This causes the track to display the clip's volume, rather than the track's volume.
6. Ctrl-click the yellow line to add a couple of keyframes, and adjust them by dragging them left or right along the graph line or dragging them up or down.
Changing parameters in the Timeline is tedious. Why?