Stuff with replace_me needed to be changed for data relevent to your setup.
Networks I am running is VK DMR on TS1 and FreeDMR on TS2 as I am running a duplex MMDVM on a RPi3B+.
All the configuring done to the dmrgateway file is either done via the web interface http://pi-star/admin/expert/fulledit_dmrgateway.php or logging in via ssh and using your fav editor eg sudo nano /etc/dmrgateway