You need to paste the event sheet in the other layouts if you want the functions work there.
Example: function for player death.
And you have 4 layouts : layout 1 for main menu.
Layouts 2 - 3 - 4 for level 1 - 2 - 3.
The function must be in the layouts 2-3-4.
You can group the layouts in one event sheet.
Right click on the event sheet and select : Include event sheet.