You can set the TIMEOUTALL parameter that determines how long the system allows a license to remain idle before it is reclaimed by the license server. To change the default inactivity timeout parameter, you must update the FlexNet Publisher option file, ptc.opt in <ptc License Server loadpoint>/FLEXnet Publisher/licensing. The default is 120 minutes. Edit the default parameter:

Change 7200 seconds (120 minutes) to another value in seconds.

The minimum value is 20 minutes (or 1200 seconds) and the maximum value is infinity. To make infinity the default, remove the TIMEOUTALL parameter from the ptc.opt file. If you set a minimum value to less than 20 minutes, the system defaults to 20 minutes.