/bind numpad4 "netgraph 1"The core of the whole system. /bind attaches a command to a key; the command goes in quotes. Anything you can type into chat, and every internal engine command, can be bound this way.
The $$ separator runs commands one after another. Each power still respects its own cooldown and animation, so a chain fires the first ability that is actually ready rather than both at once.
/alias burst "PowerTrayExec 1 4 $$ PowerTrayExec 1 0"
/bind f5 burst