Basic usage of panelizer

Hello.

I am a bit stuck in understanding two things about panelizer.

First am I right to assume that Panelizer goal is to allow panels to be used with the display/view/presentation of the individual "node types" and not the add/edit forms ? And If I am wrong, shall I triplicate the work for add, edit and view forms ?

Second after installing panelizer and going to the admin page, selecting my node type, I did not see where to go from where. I was expecting to have to create panels associated to the various build mode of the node type (view, edit, add ...) but nothing obvious happened. Selecting "Provide default panel" brings several supplementary entries (layout ..) but they seem to be only related to the "default panel" that is used they no panel is provided for the type ... but where do I set up the panels I want to provide ?
Is this the use of the "Node template" page wizard on the panel dashboard ? or do I need to create a new variant for each type in the "Node add/edit form" page ? (seems to be the old way to do it)

In case it helps I'll explain my use case, maybe panelizer is the wrong tool for the job, but I am still interested in understanding it.

I need to create panel like pages for edit forms on node types. Each node types is a "form(paper like meaning) and I want to set up the page displaying each node_type so that information pertaining to the process (the user profile, current values of some user counters, etc .. ) are displayed around the node_type form being viewed/edit/added.
Ideally I would love to be able to inject the node type inside the panel at "menu selection" time, so that I only have to do the "panel design" once and not duplicate the job 14 times :).

I have not much problem with doing PhP but much more problem finding my way around the tons of hooks and various solutions to seemingly related problems.

So they may be a good chance I picked up the wrong tool for the job, but that's still good to learn.

Thanks a lot for you time.