An Extensible Game Framework Pattern in Unity - Creating E-Learning Games with Unity - page 256

5. Load the MAIN scene file. Select the MainCamera GameObject, and paste
the level 3 pop ups with Ctrl + V . This will paste the pop ups that we copied
from step 4.
6. Now, we need to change the behavior of the buttons. Starting with the pop up
named popup_Level3Start , select this panel, and open the Button1 hier-
archy.
7. Change the actions of this button to CameraLookPlayer() so that the
camera looks down on the start of the level, and call DisableOb-
ject(popup_Level3Start) so that this panel disappears but remains at-
tached to the MainCamera GameObject persistent in _global .
8. Next, select the popup_Level3Finish panel, and open the Button1 hier-
archy.
9. Change the first action of this button to LoadLevelMainMenu (to tell
GameMgr to unload Level3 , leaving just _global ).
10. Change the next action to HideGameObject(popup_Level3Finish) to
disable update and rendering of this panel, while still leaving it attached to
the MainCamera GameObject persistent in _global .