How to Unlock a Chart in Excel

1. Open Excel 2010 and the chart that is locked.
2. Click 'Unprotect Sheet,' which is located in the 'Changes' grouping on the 'Review' tab along the toolbar.
3. Enter the password to the chart if you are asked to provide one and click 'OK.' If you didn't create the chart or set the password, speak to the person who did.