IAS Log Viewer - Online help
Using Additional Filter
Filter in reports generation allow to limit number of connects that get in
reports. For example, using filter "Duration >= '0:30:00'" report will be
generated only for connects with duration more than 30 minutes. Using
"(User Name like 'ren%') or (User Name like 'far%')" filter you can generate
reports for users that have logins begins with 'ren' or 'far'.
Read detailed information about filter's syntax here.