How to create a report on network license usage..
The report log file is a compressed, encrypted file that provides usage reports on license activity.
REPORTLOG [+]report_log_path
In the REPORTLOG syntax, “[+]” means that new entries to the log file are appended to previous entries rather than overwriting them each time the Network License Manager is restarted. It is recommended that you use this option to retain a history of log entries.