How to set a column also as "completed"?

[Alon Berger]

In addition to the default "Done" column, I want to set another column which will not show issues after 2 weeks in that status

[Jack Brickey]

If you are simply trying to hide done issues greater than 10d (for example), you don’t need another column to do this. Just add the time limit to the board’s filter, e.g.

..... AND resolutiondate >= -10d