GUI menu how to make a list in a list. C#

I'm still learning Unity and C# so I need help with this. I'm creating a main menu which I want it to say play game, you click on it then host or refresh and if you click host I want another page of settings to start hosting the server, but instead when I click Play Game it skips the page with Host and Refresh and goes straight to the Host menu. I was wondering how I would change my code or add something to it to allow me to do what I want. All the codes are in bits because I'm only including what I think is needed. C# private string clicked = ""; private void OnGUI() if (GUI.Button(new Rect(Screen.width * (1.3f/18.55f),Screen.height * (50.08f/100.3f),Screen.width * (1.05f/6.55f), Screen.height * (0.45f/7.0f)),"Play Game")) { //code on what to do after clicked play clicked = "Play Game"; } else if (clicked == "Play Game") { GUI.Button(new Rect(Screen.width * (1.3f/18.55f),Screen.height * (50.08f/100.3f),Screen.width * (1.05f/6.55f), Screen.height * (0.45f/7.0f)),"Host"); { //What to do when Host is clicked clicked = "Host"; }