Draw lines between waypoints (using lineRenderer at the moment)

Hello guys, I am trying to generate lines between waypoints. The thing I am trying to achieve is to draw a line from waypoint 1 to 2 and when your reach waypoint 2 it removes the lines between 1 and 2 and creates a new line between 2 and 3 and so on.

This is the code I have for my waypoints at the moment but I just can't seem to incorporate a linerenderer without getting lots of errors.

  using UnityEngine;
     using System.Collections;
     
     public class Waypoints : MonoBehaviour
     {
             private Transform startMarker, endMarker;
             public Transform[] waypoint; 
             private float speed = 1.0F;
             private float startTime;
             private float journeyLength;
         //    public Transform target;
             private int currentStartPoint;
     
             void Start ()
             {
                     currentStartPoint = 0;
                     SetPoints (); 
             }
         
             void SetPoints ()
             {
                     startMarker = waypoint [currentStartPoint];
                     endMarker = waypoint [currentStartPoint + 1];
                     startTime = Time.time;
                     journeyLength = Vector3.Distance (startMarker.position, endMarker.position);
             }
             void Update ()
             {
                     float distCovered = (Time.time - startTime) * speed; 
                     float fracJourney = distCovered / journeyLength;
                     transform.position = Vector3.Lerp (startMarker.position, endMarker.position, fracJourney);
                     if (fracJourney >= 1f && currentStartPoint + 1 < waypoint.Length) {
                             currentStartPoint++;
                             SetPoints ();
                     }
                     
             }
     }