It works almost just like in Excel. Select row (or 30 if you need them, "shift + space" is the shortcut, same as Excel) Then go to Insert menu (Ctrl + ⌥ + I) an

It works almost just like in Excel. Select row (or 30 if you need them, "shift + space" is the shortcut, same as Excel) Then go to Insert menu (Ctrl + ⌥ + I) and then W. Very easy and fast.