how can I zoom in the sheet sheet

I am french, so I hope that everybody will undersatnd my question.

On Autocad, when I'm in tab "layout" or sheet view , I spend pass from "paper mode" to "object mode" in my sheet view. On Draftsight, when I'm in the "layout" window (shet view),I have the drawing frame corresponding to my printed sheet, and have all items I drawn. I can not zoom my objects in the drawing frame, to only print the desired designs. On Autocad, next to the tabs "ortho", "polar", "hangs" or otherwise, thereise a tab "paper-object" ... Do you know where is the equivalentDraft?

 

Thanking you.