It is pretty much the same selection process.
Make an appointment with your local AFCO and attend a P2 presentation. It and more will be revealed there.
I'm currently in the process of applying to become a WSOp what with 11.44yrs (According to JPA) under my belt as a TG1 AV (JT so I'm old school).
However, I never received that email which apparently was sent to me on the 15th April 2010. I know it's not my email account at fault as I have received all other correspondence on this matter successfully.
Fingers crossed I can achieve some leeway and understanding.
Anyway, best of luck.