How to: Edit a linked Excel chart.
Solution:
Select the 'Edit' menu, select 'Linked Worksheet Object'. select 'Edit' again, and make changes.
1) Select the 'Edit' menu and select 'Linked Worksheet Object'. (Another pull down menu appears.)
2) Select 'Edit'. (The source application appears.)
Edit linked Excel chart
3) Make the desired changes.
4) Select the 'File' menu and select 'Save'.
5) Select the 'File' menu and select 'Exit'. (PowerPoint reappears with the desired changes.)