The BLËSK NPM module requires the SNMP protocol, which should have already been defined and configured during the installation. The auto detection part of the software will handle all the jobs related to automatic importation, so there should be nothing for you to do except defining additional subnet(s) to scan if needed.
1. Go to Network Performance Monitor | Scan | LAN. Add any additional subnet you would like to auto detect and import into the « Subnet Range » box. Use commas to separate multiple entries (e.x 192.168.2.0/24,172.16.0.*). Wait one hour for the Scan to start since the default frequency is set to every 1 hour.