Webtrends Analytics 9 Adminstration Guide, November 2012
Analytics Reports data captures can be scheduled using the Data Scheduler.
To use this feature, you need the Data Scheduler Analytics Data Captures user right. To download your captured data files, you need the Available Files SFTP Access user right. You also need profile read access to capture data from any profiles.
Your Time Period setting also determines how often data is captured. For example, if you select Month, data is captured monthly. Captures occur after the profile data is analyzed.