The Period tab has a sub menu that allows you to filter what is displayed in the Period tab.  The sub menu items appear in the orange bar top of the period tab.

The Period Sub menu contains:

• Year Start - indicates what month of the year is considered the start of the year.  Defaults to January but can be changed to any month of the year
• Week Start - indicates what day of the week is considered the start of the week.  The default is Sunday however this is country dependent
• Month Type - indicates if it is a calendar month start or week commencing months start
• Period Type - allows you to swap between Actual, Relative and Week Average period types
• Day Mask - indicates which days of week you will include or exclude in your analysis
• End Date (Australia Only)- Allows you to set the end date your current dataset.

For most of the above options you can only select one item at a time - thus a black dot will appear beside the item in the list you have selected.  The exception to this is the Day Mask because you can select multiple days to display or hide - thus a black cross appear beside the days you have selected to display and unchecked days indicate those you are masking or hiding.  In the sub menu bar itself any hidden day will appear as an underscore in the days listed.