Case tutorial
① Start Excel2010, open the data table, select the A2:A7 area, and click the menu bar--Formulas--Name Manager.
Excel2010
② A new interface will pop up, click the New button, set a name, here we can just pick the name, OK.
Excel2010
③We can clearly see the name, value, reference position, range and remark information, and close the window.
Excel2010
④ Then select column E and click Data--Data Validity in the menu bar.
Excel2010
⑤Set as sequence in Allow, source = name, OK.
Excel2010
⑥The data validity is now set. Click the small triangle next to it to select column A data. If you want to set all data areas as optional, you can change the reference location to the data area in the third step.
Excel2010
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