1) Press CTRL-F3 and create this named range:
Names In Workbook: ScientificNames
Refers To: =OFFSET(DataBase!$A$2,,,COUNTA(DataBase!$A:$A)-1,)
2) Select Updating cell C2 and apply these Data Validation settings:
Allow: List
Source: =ScientificNames
3) Right-click the Updating sheet tab and select VIEW CODE, then paste in this event macro:
4) Close the VBEditor
5) Hide the Database sheet
6) Save your workbook as Data.xlsm (macro-enabled workbook)
Now try out the Updating sheet starting with the new Drop Down in C2.
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