How do i go about PCS? HRC or my chain of command ?

You would have to contact your Branch Manager and see what your options are. Normally if you haven't been at a duty station for a few years HRC won't move you unless its to another critical short area. AR 135-18 covers AGRs but it does not really go into specifics about requesting a transfer. In my experience contacting your Branch Manager is the way to go unless you have an "in" at the unit you want to transfer too that can make a call on your behalf. But usually your current command would have to agree to let you go.

I am assuming you are USAR since you mentioned HRC. If you are on your initial tour, HRC doesn't usually move people before completing 36 months time on station. If this is a subsequent tour you can submit a 4187 after 12 months, but requests for PCS are looked at more favorably closer to 36 months time on station. PCS dollars are tight right now. If you are not on an initial AGR tour, you could also look into an MOS reclas which could also move you sooner. Approval for that would depend on the strength of your current MOS. Your PMO could tell you if you are in a shortage/overage MOS and what MOSs are accepting people for reclas

HRC can send you to the Duty-Station of choice most of the time SSG P!