If you would like to enable Shared Workbook option, here's a way to add it to Excel Quick Access Toolbar. It is hidden under Excel Options.

Learn how to add Windows Calculator to the Excel Quick Access Toolbar for performing quick calculations. The Quick Access Toolbar in Excel is one place where all your shortcuts can be placed ...

More extensive edits must be done in Excel itself. Here, an eXpresso plug-in streamlines the process – letting me open, save, and change properties of online files from the Excel toolbar.

Google's free add-on for versions of Word, Excel, and PowerPoint in Office 2003, 2007, and 2100 makes it easy to save, share, and sync DOC, XLS, and PPT files to Google Docs.

2/ Add a calculator to the excel toolbar There's a calculator in Excel 2010 but by default this feature is hidden, to get the calculator on your Excel screen navigate to Quick Access toolbar ...