Think this is what you're looking for, See wb..
PS: Your Combo Boxes will show blanks, which are actually can also be removed by adding another formula into OFFSET function. Notice that for the 3rd Drop Down, into OFFSET I used 5 as RowHeigh. Because it's constant it wouldn't change automatically. You will need to use another nested formulas to get rid off blanks in you drop downs.
Bookmarks