Script to run from a fixed scene in the Unity editor

The code reference is as follows:

using UnityEngine;
 
public class InitializeOnLoad : MonoBehaviour {
 
	[RuntimeInitializeOnLoadMethod]
	static void Initialize()
	{
		if (SceneManager.GetActiveScene().name == "Global")
		{
			return;
		}
        SceneManager.LoadScene("Global");
	}
}