The particle animation freezes whenever your mouse if over the browser window. This allows you to hover over individual particles and see atrributes (source/destionation address, protocol, etc.). If you start with -Dparticle.demo=yes, open the particle app web page and then move your mouse outside the window you should see an example animation. The blog article you referenced,
https://blog.sflow.com/2018/07/visualizing-real-time-network-traffic.html, describes how to label each axis and assign address ranges:
Each of these paramaters can be passed when you start, e.g. -Dparticle.axisN=Internet, labels the top quadrant as "Internet", etc. You can put all the settings in particles.conf file in the sFlow-RT home directory and load the file with the -D-Dsystem.propertyFiles=particle.conf,
./start.sh -Dsystem.propertyFiles=particle.conf
You said you aren't using Docker. If you are running sFlow-RT as a deb/rpm package then the settings can be added to a file in the /usr/local/sflow-rt/conf.d directory, e.g /usr/local/sflow-rt/conf.d/particle.conf, see
https://sflow-rt.com/reference.php#properties