AddButtonsScript

using UnityEngine;
using UnityEngine.UI;

public class AddButtons : MonoBehaviour
{
    public Transform spawnParent;  
    public GameObject spawnButton;    
    
    public void SpawnPrefab()
    {
        
        GameObject newInstance = Instantiate(spawnButton, spawnParent);
        newInstance.SetActive(true);
    }
}