Financial Reporting Studio - Colm Heading Formula

Working on a report where a created a user define list of a group of accounts.  I would like to print all in one column, but unable to find out how, so I have it as hide colm.

I have a report where the year changes in columns. Columns using a user defined list, which doesn't print, but the next colm is a formula which = the hidden colm. I used a custom heading formula (<<POVAlias("Grid1", "Year")>>) which is working fine. The next colm is the same concept, other then the year, needs to be like the next year (relative member = +1) How can I do this? Or if my user defined list in several accounts for example, how can I get them to print as one colm of summed (total) data values?