The person primarily responsible is Deputy Minister Fonberg, but there is also Admiral Rouleau, who is Vice-Chief of the Defence Staff , and the Assistant Deputy Minister of Finance and Corporate Services. Those are the three people who decide the distribution between the different sectors or environments, or whatever they are called.
Evidence of meeting #22 for National Defence in the 40th Parliament, 2nd session. (The original version is on Parliament’s site, as are the minutes.) The winning word was management.
A recording is available from Parliament.