The main hiring halls in Battletech are on Galatea, and later Outreach. But if both systems are quite far, is there sort of a "gazeteer" available on local planets? Would one on the planet (for the sake of example) Kentares get a listing of Mechwarriors for hire on Outreach, exchange messages, and potentially hire said mechwarrior?
In general, does ComStar or any of the banks process interstellar transactions? How does it work to send funds from say Capella to Arkab?