To set preferences for Interactive Reporting:
Select File, then Preferences, and then Interactive Reporting.
Select the country from the locale drop-down menu for the local for which you are setting the defaults.
The locale selected sets the locale or country associated with the default format that you want to use. The locale that you select determines the available number, date, and currency formats
Select a format for the date, timestamp, time, and month from each of the drop-down menus.
Date sets the default date format, timestamp sets the default time and date format, time sets the default time format, and month sets the default month format for the month used in Add Date Groups.
Select a format for the real number, integer, and null option from each of the drop-down menus. Null sets the default format for null values.
Null values are empty values for which no data exists. Null values are not equal to zero. Real sets the default format for real values and integer sets the default format for integer values.