At the top left, the events are listed in the selected period.  When opened for the first time, all events  are marked and all requirement items and linked purchases are displayed. Double-click to open the individual events directly from the list if required.

1. In the top line of the sub-window, filter for  Operation or Cranking group.
2. To display only the required items and purchases for a specific event, select the desired event  with a single left-click or Shift/Ctrl and left-click for multiple selection.
3. To display all items again, select all events with the Shift/Ctrl key and left-click or Ctrl+A and  Refresh.