Yes, you can insert a single, or multiple, rows above or below the currently selected row (or rows).
Once you have selected a row or rows, hit the applications/menu key if you have one or SHIFT+F10 if you don't. From the context menu that comes up activate the Insert item, which will then give you the submenu for insert, which includes rows above or rows below. There are other options as well. If you have a single row with focus you will get a single row inserted, if you have multiple rows selected then you will get the same number of empty rows inserted as you already have selected.
Brian - Windows 10 Home, 64-Bit, Version 1809, Build 17763
A great deal of intelligence can be invested in ignorance when the need for illusion is deep.
~ Saul Bellow, To Jerusalem and Back