If you have declarations to make over several periods or over several zones, you will have tabs displayed at the top so that you can change the declaration.
The page displayed corresponds to the tab displayed in Yellow.
To change the Preiod/Zone, simply click on one of the other available tabs.
In the tab, you have the information on the area of the declaration, as well as the period.
You also have the reminder of the period to be declared in the blue box.
The number of days remaining on the campaign is available on the right hand side of the tab.