well there's 2 FO vacancies in WAT for sure with their single aircraft they have based there at the moment and depending on whether they base a second aircraft there this summer like the rumour suggest, there will be a further 4-5 FO vacancies depending on the roster,4 captain vacancies obviously enough.
So bearing in mind that you need 2 cabin crew per duty, and 2 standby,you're probably talking a possibility of 10 for WAT. Now that's dependent on route expansion thus a basing of a second aircraft.
Regards CP.