Creating Pedestal/Dolly movements with 2 node camera

I'm trying to create a website animation but having some trouble controlling the 3d camera. Full disclosure, I'm an AE noob.

I can't figure out if I need a 1 or 2 node camera. From my understanding, a 2 node camera is needed to dynamically link the focus distance to a layer. In my case, I want the focus to always be on the mouse pointer as it navigates around the page. The problem that I'm running into is that I can't seem to make dolly or pedestal movements with a 2 node camera, everything revolves around the point of interest.

So is there a way to make these horizontal/vertical camera movements with a 2 node camera?

Or is there an expression that will link the focus distance to the position of a layer for a one node camera?

Or is there some other concept I'm missing entirely here.