Start a project well

Good morning to you all,
I have a beginner’s problem.

I found a tutorial explaining how to slow down the time in the game, by the functions “Set and Get Global Time Dilation”. I am asked to open a project to the “Firstpersonn”, so far no problem. I am the tuto and arrives at the end, the time is “slowed down” as it should be.

Where the difficulty begins is to reproduce the manoeuvre in an empty project. Nothing makes time slow down; yet I have a semblance of character moving and a ball bouncing, so the project is functional, at first sight.

The question is: how to make my project identical to the one where time “slows down” or how to make an empty project a project that works the same as the one pre-programmed?

Good day