Also just found the procedure online:
It starts on page 28-11. Bottom line though is that it's done with a warm engine (let the fans
cycle on/off once to be sure, even better if you go on a little drive beforehand), disconnect the
CTS after startup (not before), set timing while a helper is revving the engine between
2000-2500rpm. They go into some VAGCOM stuff to get some temperature readings from the ECU but
that's not necessary...if the cooling fans have cycled on/off you're good.