The leftmost column shows you all Epics as well as the Issues without Epics from your selected Jira Board.
At the top right you see a time tracking summary for all Epics, regardless of the applied filters.
3. When 1 or all Epics are selected, all their tasks, sub-tasks and their details are listed on the right.
4. At the bottom of the leftmost column you can select to see all issues without epics
