Currently, done issues are removed after 14 days or by clearing them manually directly on the board.

It would be helpful to be able to customize the time when done issues are removed from the done column.

Workaround 1:

1. Write a query that returns all issues in a project that have been done for more than 14 days e.g. 

   project = CJSWK AND (fixVersion in unreleasedVersions() OR fixVersion is EMPTY) AND status = Done AND NOT (updated >= -2w OR statusCategory != Done) ORDER BY Rank ASC

1. Run that query and copy the URL of the search page
2. Create a shortcut that links to that URL. I called mine Older Done Issues:
   

Workaround 2:

To view cleared issues you can enable the project issue navigator and select the Done filter.