If you manage data in multiple Excel spreadsheets, you can use the Consolidate Data wizard to merge data from several spreadsheets or workbooks into one master sheet. The Consolidate Data wizard ...
Excel validation lists avoid blanks and errors with TOCOL(ignore) plus FILTER; the spill range stays stable across worksheets ...
Prevent broken formulas using tables, validation rules, separate worksheets, named variables, and the power of LAMBDA.