Column displaying:

To display a column you want to see:

Click on the Columns text in the right upper corner (as you would do in Issue Navigator) (1)
You can search for the right column name (2)
Select the column you want to add by clicking in the checkbox (3)

The added column will be at the right end of your table!

If you want to undisplay a column (remove it from the datasource) simply uncheck that from the list.

Important! You can not undisplay the KEY column. Even if you unchack it from the columns list it will still be on the screen.

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