How do I distinguish the left mouse button from the right?

Hello all! Thanks for reading!

I am using the new Unity input system and am currently designing the input action asset to control a mouse pointer on the screen. I want the left button to be held down for dragging objects across the screen, and the right button to be held down for connecting objects with a line.

However, when I assign actions and attempt to bind them to the mouse scope, there is no way to differentiate between the left mouse button vs the right mouse button.

Please see screenshots:

 

I clicked on the little arrow to the left of the action and got to the screen where I could assign the primary action path. I pressed on the T icon beside the field to turn it into a drop down, and clicked on the drop down. I then clicked the Listen button and clicked my mouse button, but nothing happened:

 

Couple questions then.

1. Have you restarted Unity yet since installing the new input system
2. Do you have options without using listen?

If you have it set to old input system still in the player settings or haven't restarted Unity yet then it won't work.