From what I read about this feature, it allows the user to view descriptions, dimensions, and measures of a chart. How would I edit the description that is displayed?
Please find the link for more details,
It will just enable show detail icon on visualization you have to click on it to view details.
find the attached screenshot.
thanks. But I know the icon and how to enable that.
The problem is, where can I add the description which I want to show when I am clicking on the "i" icon?
On the left hand side you will see an option to list 'Master Items'. From there you will have options to create master measures, dimension, visuals, etc. Create New and include description in the new window that pops up.