Hi Amigo,
It's hardly possible to help you without full understanding of how the implementation is setup for these metric and prop99 dimension.
In most of the implementations the campaign traffic is tracked in the s.campaign variable that is usually named Tracking Code dimension. Build a freeform table in Analysis Workspace with the Tracking Code dimension and Tracking Code Instances metric. This will show you the number of click-throughs for each campaign ID. Filter the list to get only those you are interested it.
Then if this is aligned with what you are looking for, select the filtered lines and right-click to create a segment.