When using Data Driven pages, I'd like to be able to assign legend items to specific columns. I have each of the 3 top layers set to "only show classes that are visible in the current map extent." When all layers are present, the legend looks like this:
This is a problem when trying to fit the legend in the space available for it and still have it a decent sized font for legibility.
I would like to have 2 columns regardless of if one of the legend items is not on the map for the current data driven page, like this: