How do I make different games use the same event sheets?

How do I make two (or more) different games use the same layouts and/or event sheets?

For example: I have 2 games, both start with a splash screen and a main menu screen. At the moment, I have 2 different projects, with duplication of layouts and event sheets. The problem is that when I fix a bug on one project, I have to copy all the changes I've done in one project - to the next.

Any Ideas?

Thanks,