While most of the WIND entities have their period of appearance on the NOP regulated by the Display Period component, providing a simple pair of Start day and time and End day and time, some do rely on a different mechanism, allowing any number of programmed appearances.
This is achieved with the Occurence component, which can be found associated to specific entities such as ATFCM Events, Calendard Events, ... and other recurrent events which are likely to have multiple validity periods.
This is a typical example fot he Occurence field, indicated that the concerned item whill be visible on the Portal from 01/03/2013 at 00:01 to 12/09/2012 at 23:59 and from 15/5/2013 at 13:22 to 31/5/2013 at 12:45.
Managing Occurences
The component allows to to Add, Edit and Delete occurences.
Adding Occurences
Click on the Add button ...
to open the Display Period editor:
The default values are 'now' for start and 'never' for end.
Please refer to the Set the Date and Time section for additional information on how to use the component.
Editing Occurences
There is actually no 'Edit' procedure - but here is a workaround:
- select a display period pair - it will be highlighted with a light blue background, and the Display Period component will appear, if not already opened.
- make the necessary changes in the Start and/or End fields
- select another existing display period pair to persist your changes
In cases where only one display period pair is present, you can create a temporary new one and delete it as soon as you managed to make the desired changes.
Deleting Occurences
Simply select the display period pair to remove and click on the Delete button.