Mention the INDIRECT function in an Excel forum and you'll start a fight. It's volatile, meaning it's always awake and recalculating, which can turn a fast spreadsheet into a sluggish mess. But used ...
Excel validation lists avoid blanks and errors with TOCOL(ignore) plus FILTER; the spill range stays stable across worksheets ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results