If you want to modify the laser IP address run FlyControl, select Management under the Laser node and click on the laser you would like to modify.
Select Edit and change the IP address or the other information about the laser.
(If you do not know the IP address of your laser please refer to How to get the laser IP address section you may find in this page).
Once modified the information, click on Save.
NB you can modify the IP address or the other information about the laser only if you run FlyControl as Admin.