How to print in a scale

Hi everyone,

I’m having trouble setting the scale of a section in a Layout.

I need to display my section at 1:100, but I can’t figure out how to do it because the zoom level seems to be free, and I don’t know how to set an exact viewport scale.

What is the correct way to set a section to 1:100 in a Layout? Am I missing a specific command or viewport setting?

Thanks in advance for your help!

Select the detail view and go to the layout properties