OD E-Channel Modifier allows you to modify enveloped values without having to go to the Graph Editor. It is a generic Layout Plugin:

Options:

• Accessible Envelopes : This shows you which envelopes exist and can be selected to be modified
• < : Goto previous keyframe
• > : Gto next keyframe
• + : Create Key
• - : Delete Key
• C : Copy Key
• P : Paste Key
• Open: Opens the envelope in the Graph Editor
• Curve: shows which type of curve the selected Key has
• Tension: Sets the Tension of a key on a TCB Curve
• Continuity: Sets the Continuity of a key on a TCB Curve
• Bias: Sets the Bias of a key on a TCB Curve

Here's a how-to video showing OD E-Channel Modifier in action.