Question Button With One Modifier inside of Vector 2D Composite

I'm looking for a way to add a Button With One Modifer as another entry for Up inside of this 2D Vector composite.

What I'm trying to do: Use "W" for Up and use "Mouse Left + Mouse Right" for Up and return normalized Vector2.

The solution I'm using now is to take both inputs, then break them apart in the script and then add them back together and normalize.

Code (CSharp):

1.         private void Awake()
2.         {
3.             _inputMaster = new InputMaster();
4.  
5.             _inputMaster.Player.GrabCamera.started += _ => GrabCamera();
6.             _inputMaster.Player.GrabPlayer.started += _ => GrabPlayer();
7.             _inputMaster.Player.GrabCamera.performed += _ => ReleaseCamera();
8.             _inputMaster.Player.GrabPlayer.performed += _ => ReleasePlayer();
9.             _inputMaster.Player.Jump.started += _ => _mover.Jump();
10.             _inputMaster.Player.AutoRun.started += _ => AutoRun();
11.             _inputMaster.Player.AutoRunCancel.started += _ => AutoRunCancel();
12.         }
13.  
14.         private void Update()
15.         {
16.             _mover.Move(GetMovementInput());
17.         }
18.  
19.         private Vector2 GetMovementInput()
20.         {
21.             var movementInput = _inputMaster.Player.Movement.ReadValue<Vector2>();
22.             if ( _isAutoRunning || _isMouseRunning)
23.             {
24.                 movementInput.y = 1;
25.             }
26.             movementInput = movementInput.normalized;
27.             return movementInput;
28.         }