I want insert a row and want to copie the layout of that row.
is that possible?
Depending on what you mean by "layout" it's a piece of cake.
Put your cursor in the row above which you want the insertion to take place. Then, from the menu bar across the very top of the screen, go to Insert...select (click on) Row ... and lo and behold, it will be done.
With the same column widths as the row that was above.
But if you mean something else by "layout" other than column widths....and characteristics of formatting...let us know.