The figure shows the Manage Logs page. There is a section called Delete Logs which contains the following fields:
Log Type (listbox)
Log Files (Radio Button Group)
Older than one year (radio button)
Older than one month (radio button)
Older than one week (radio button)
Older than the specified date (date field)
All (radio button)
There is a Delete button near the bottom of the page.