I applied for the MA National Security Studies on Jan 11th, documents status changed on Feb 6th. I've contacted them to ask if I would get a decision before Feb 28th, as this is the deadline for one of the (external) scholarschips I'm applying to. They said they hoped to provide me with a decision by then and that, as of Feb 6th, my application is with the 'admissions tutor' (which I assume is the department-specific admissions person). I've also called admissions with this question and the person on the phone replied that I should receive a decision within 7-10 working days after my application reached the admissions tutor but that delays do sometimes occur.