Control Two agents separately with one script?

I have two characters"agent" moving them on terrain by mouse. My script for both of them is...

public Vector3 point_;
public float mark;
public float mark;
public UI_Button _active_character; // butoon select script

void Update 
{

  Ray mouseRay = Camera.main.ScreenPointToRay(Input.mousePosition);
    RaycastHit mousePoint;
    if (Input.GetMouseButtonUp(0))
    {
        if (Physics.Raycast(mouseRay, out mousePoint, 100) )
        {
            point_ = mousePoint.point;
            mAgent.SetDestination(mousePoint.point);
            mark = Vector3.Distance(point_, gameObject.transform.position);
        }
    }
 }

Here script for character buttons. Every character has it own button.

public bool character1, character2;

void Start()
{
    character1 = true;

}

   void Update()
{

    if (character1 == true)
    {
        character2 = false;
    }

    if (character2 == true)
    {
        character1 = false;
    }

   if (character1 == fale && character2 == false)
    {
    // Later. free cam moving...
    }

}

public void avatar1_click() // button 
{
    character1 = !character1;
    character2 = false;

}
public void avatar2_click() // button
{
    character2 = !character2;
    character1 = false;
}

It's possible to control both of them separately by one script by click on button to chose character ?