Hi Gianni, or should I say, HI GIANNI.

Firefox 97 finally made the full transition to the combined preview/setup/print experience introduced in Firefox 85. Now a preview is displayed when you choose Print, and the controls that used to be along the time can be found on the right side. If you are looking for Scaling -- shrink-to-fit vs. a percentage size -- click "More settings" to expand the panel to access that (and lots of other stuff).

Can you find the settings you need?

Hello, You can call me Gianni. First of all , thanks for replying, but unfortunately in Your functions list there are : Setting and More Tools. None of them list the printing setup interface. My installed version is 98.0.1 64bit and i am running Windows 10 Pro fulli updated 21H2 Build 19044.1415

Where I am wrong ??

Regards Gianni Capone

Sorry, I meant after you call up Print. Firefox displays a Preview on the left and settings on the right.

I am attaching a screenshot of what I see. Is yours similar?