Change the position or disable collision of BoxCollider2D

Trying to make my player crouch:

For this, i need to change the position of my collider, or get rid of it. Thanks :wink:

public BoxCollider2D boxcollider2D;


void Crouch()
    {
        if (Input.GetButtonDown("Crouch"))
        {

            boxcollider2D. //help here

        }
        else if (Input.GetButtonUp("Crouch"))
        {
            //help here (do the opposite)
        }
    }

Here is the code to disable and enable.

    void Crouch()
    {
        if (Input.GetButtonDown("Crouch"))
        {

            boxcollider2D.enabled = false;


        }
        else if (Input.GetButtonUp("Crouch"))
        {
            boxcollider2D.enabled = true;
        }
    }