How to Merge Changes from Different Excel 2013 Users
Click the Customize Quick Access Toolbar button at the end of the Quick Access toolbar and then choose the More Commands option.
Excel opens the Excel Options dialog box with the Quick Access Toolbar tab selected.
Choose the Commands Not in the Ribbon option from the Choose Commands From drop-down menu.
Excel displays a list of all the commands not currently on the Ribbon in the list box beneath the Choose Commands From drop-down box.
Click the Compare and Merge Workbooks item in the list box below and then click the Add button.
The Compare and Merge Workbooks item appears below the last item in the Quick Access Toolbar list box on the right side of the Excel options dialog box.
Click the OK button to close the Excel Options dialog box.
The Compare and Merge Workbooks button appears at the end of the Quick Access toolbar. (Its icon is an outlined circle.)
When you click the Compare and Merge Workbooks button that you added to the Quick Access toolbar with the original workbook file open in Excel, the program opens the Select Files to Merge Into Current Workbook dialog box. Here, you select the drive and folder that contain the copies of the shared workbook file edited by your co-workers.