Script for activating next GameObject after first one has been found/tracked (Vuforia)

This script should do the trick for you:

 using UnityEngine;
 
 public class GameObjectActivator : MonoBehaviour
 {
     public GameObject[] GameObjects;
 
     private int _activeObjectIndex;
 
     public void Start ()
     {
         // Set first GameObject active by default
         setActiveGameObject(0);
     }
     
     public void Update ()
     {
         // This is your trigger for rotating through the active objects.
         // I picked "T" for "Toggle". It seems you'll be using OnTrackingFound. 
         // I'm not familiar with Vuforia, but as long as you increment _activeObjectIndex
         // and call setActiveGameObject(_activeObjectIndex), this should work for you.
         if (Input.GetKeyDown(KeyCode.T))
         {
             // Increment to next GameObject
             _activeObjectIndex++;
 
             // If we're on the last GameObject, wrap around back
             // to the first GameObject
             if (_activeObjectIndex > GameObjects.Length - 1)
             {
                 _activeObjectIndex = 0;
             }
 
             setActiveGameObject(_activeObjectIndex);
         }
     }
 
     private void setActiveGameObject(int index)
     {
         for (int i = 0; i < GameObjects.Length; i++)
         {
             GameObjects[i].SetActive(i == index);
         }
     }
 }
 

How to use:

1. Create an Empty GameObject at your root. Name it GameObjectActivator or something similar.

2. Attach this script

3. Set the "GameObjects" property array size to the number of GameObjects you want to rotate through. I see 7 "Station" GameObjects in your screenshot.

4. Drag each GameObject into a slot in the "GameObjects" property.

5. Run the game and press "T" to toggle through them for testing.

You'll need to modify the script a bit to have it trigger when you want.

Hope this helps!