Amateur Questions: New Input System And A Player Manager

Sorry in advance for some of the Amateur questions , but I just started using the New Input system and I want to learn the correct Process for setting up my controls in my Player Manager script.

After several tutorials, I setup my basic controls. I setup a couple of control schemes.
I setup a couple of Action Maps. My current test game is just a standard 2d rpg. I have a few questions that I hope would only take a minute for somebody with experience to answer:

Questions
1) Whats the proper way to basically change which Action Map the player is using? I made several Action Maps for stuff like: Standard Walking and Interacting, Status Menu, NPC Dialogue.

currently my walking controls are just called like this:

private void Awake() {
controls.playerControls.Accept.performed += acceptCtx => Accept();
controls.playerControls.Cancle.performed += cancleCtx => Cancle();


controls.playerControls.Movement.performed += moveCtx => Movement(moveCtx.ReadValue<Vector2>());
controls.playerControls.Movement.cancelled += moveCtx => Movement(Vector2.zero);

}

but what do I do when I am talking to someone and I want to switch my Action Map to a Dialogue Action Map?

2) Should I even be making all these Action Maps for pretty much any menu change?

3) I seem to be having some problems reading the Leftstick on a gamepad. I added a couple of Processes:
Stick Deadzone, and Axis Deadzone, but my character still keeps running off in a direction.

It works fine with the Dpad, even though it feels a little clunky compared to the old Input system. I can't put my finger on why though.


Any help for a newbie is most welcome.