Hi @Zuin_-_Amministrazione, I'm assuming you want Excel to default to the "Page Layout" view, that shows the page margins how the page will print while you're working.

Fortunately, this is a simple setting:

Now whenever you open a new workbook, it will display with the margins showing on all sides. You can change this at any time by following those same instructions and selecting "Normal View."

Here's a link with images showing how to do this: https://www.live2tech.com/set-page-layout-default-view-excel-2013

If you just want quick access to the Page Layout button, it should be available on the bottom right of your workbook next to the zoom icon on the green strip. There should be 3 icons down there: normal, page layout, page break. If it's not there, right click on the green strip to customize the status bar and make sure "View Shortcuts" is checked.

I hope this helps you accomplish what you're wanting to do!