BC PNP recruitment effort info.

[Nksk98]

Hi everyone,
I am currently thinking to apply for EEBC under international graduate stream. My queation is that how can my employer demonstrate the recruitment efforts without job bank or Work BC advertisement? Is there another option except for an ad in the newspaper as that would cost lot of money?
The PNP guide says one can post an ad on Professional association websites, what does that mean?
Thanks