Excel Shared Workbooks

Add Shared Workbook buttons to the Quick Access Toolbar

Click File > Options > Quick Access Toolbar.
Open the list under Choose commands from and select All Commands.
Scroll down that list until you see Share Workbook (Legacy). Select that item and click Add.
Then scroll through the list until you see Track Changes (Legacy). Select that item and click Add.
Scroll through the list until you see Protect Sharing (Legacy). Select that item and click Add.
Scroll through the list until you see Compare and Merge Workbooks. Select that item and click Add.
Click OK.
Now four new buttons will appear at the top of the Excel window. Each button looks like this:
- Share Workbook button:
- Track Changes button:
- Protect and Share button:
- Compare and Merge Workbooks button:

You may encounter other articles that refer to these buttons being on the Review tab. But after doing the steps above, the buttons are available on the Quick Access Toolbar instead.