Configuring and Using Lightsquid with OPNSense for newbies

[whatdoIknow]

Hi

I downloaded and installed the lightsquid package on my OPNSense setup, but now I need help with the setup/configuration.
I am pretty much new to setting up firewalls etc, so please be gentle.
As far as I know there is no menu for lightsquid in the opnsense webinterface, so where and how can I get access to its configuration.

Info: OPNsense 16.7-amd64
FreeBSD 10.3-RELEASE-p5
OpenSSL 1.0.2h 3 May 2016
lightsquid   1.8_4

Any help would be greatly appreciated.
whatdoIknow