LGB1994: there doen't seem to be any definate way of doing it
It automatically happens when the system algorithm is satisfied. WGT does not publish benchmarks but suffice it to say that we must play a certain number of rated rounds along with lowering our scoring average to an unspecified number. It doesn't appear that our points level is a factor in tier advancement...but who knows for sure. From what I can see, you are dangerously (smile) close to making Tour Master, so get ready to play some serious golf (smile).
Joey