can't setup Job to be recurring with CRON

Hi, is there a way to create a job in Satellite using cron and using this syntax

30 9 8-14 * * test $(date +\%u) -eq 3 [due to UTC that is 5:30AM EDT]

I want 2nd Wednesday of every month.
I think it can only handle 30 9 8-14 * * is that true ?
thank you.
We run Satellite 6.3