Is it possible to apply conditional formatting to a whole sheet such that whenever the cell above the current cell has the same value (either text or number) as the current cell, the current cell will be formatted yellow fill/blue font?
For example, when cell:
A1 is blank
A5 is blank
only cells A3, A4 and A7 will be formatted with yellow fill and font blue.
While in A2, please try a Conditional Formatting formula rule of:
with Applies to
=$2:$20 or as far down as you wish or are able to go, with yellow fill and blue font.