By judging mission reports, Victor gives every agent a rank, which is a number.  In our sector, they range from 1 (trainee agents) to 911 (Obsidian, the sector commander).

After every mission, your rank can go up or down, depending on whether Victor thinks you made good decisions.  My rank went up quite quickly at first but, since I passed 600, it’s gone up more slowly, or down if I’ve done something stupid.

Federation rules say,  “An agent must obey every agent with a higher rank, without question.”  If a team of agents is sent on a mission, the one with the highest rank is automatically in command.

Agents’ ranks are shown on the chestbands of their uniforms, so, if two agents meet, they know immediately who’s in command.