Excel validation lists avoid blanks and errors with TOCOL(ignore) plus FILTER; the spill range stays stable across worksheets.
It's just one right-click.
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3 simple tricks I use to make Excel column charts actually useful
Turn generic columns into custom visuals by adding floating totals, nesting series, and layering simultaneous data labels.
Glide turns an Excel spreadsheet into an inventory app; computed columns replace formulas, giving live stock-on-hand totals across tables.
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