its not clear to me what you want to do. with the layout, you can only make the grid height change depending on the layout options you use but there wont be empty lines there. this has nothing to do with layout. for this, you might need some css.
it appears to be the same as the jsfiddle link i shared. but what do you want to change in it? i dont understand what you want to do.
always best to have practical examples ...
some go to the hompage I've posted ....
click to login and then"letzte Bestellungen"
then you see what my problem is
approved the list has no data can show them
then they should still useable appear across the entire range
including empty rows