Ipq806x NSS build (Netgear R7800 / TP-Link C2600 / Linksys EA8500)

I apologize for the noob question, but I couldn't find the answer myself in this long thread. Does this pertain to making a custom build of this firmware, or is there something specific the end user has to import into the router after flashing this to implement NSS SQM. Thanks all.