If right click is not working when you try to edit a graph in your Excel work sheet, then try the following solutions to resolve the problem
- When you open the Excel worksheet from Microsoft Outlook mail, then the excel workbook will open in protected mode. You can find an "Enable Editing" option displayed in the top of the workbook.Click enable editing and try editing the graph.
- When the work book is in shared view, then you cannot edit the graph . Go to Review tab, In shared View, remove the shared option and click OK. Now try editing the graph on the excel work book.
- Check whether the worksheet is write protected. If it is write protected , then you must need a password that has been set by the owner of the sheet to edit the graph.