How do I transition to the next level?

I'm making a platformer, but I can't figure out how to make the character go to the next level. I know it has something to do with "when x happens, go to layout 2", but I don't know what.

Hello again, that's up to you and the design of the game. What does the player need to do to reach the next level? You could do it with reaching a score but usually in a platformer it's reaching the end of a level right so it could be overlapping an object or interacting with something like pressing E on a door?

I was thinking of going through doors, so how would I do that?

Player overlapping door object, go to Layout 2.

Or if using keyboard to open door, you can add keyboard object then say,

Key is pressed and player is overlapping door, go to Layout 2.

Thank you!