Hope I get this explained well enough:

Assume I have 5 ppt charts, one each for 4 different accounts and then one summary slide. I want to find a way to be able to take notes on each account's slide and then see those notes summarised on the overall slide.

I have tried with linked / embedded Excel worksheets. However, I can't get worksheets within teh ppt to link. If using a separate "helper file", I can get the table in ppt to update when I change the Excel but not the other way around.

Is there a way to do what I aim for?