To edit an excel file with multiple users, first open spreadsheet you want to share.
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Click the review tab.
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Click on share workbook.
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Select share workbook again.
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Place a check mark in the check box at the top of the “Editing” tab on the Share Workbook pop-up window.
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Click the advanced tab at the top of the Share Workbook pop-up window.
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A variety of customizations for controlling multiple users should now appear. Choose desired options on the Advanced Tab.
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Click OK to save the workbook. Now multiple users can edit the Spreadsheet.
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