I've got a bad feeling about this...
Obligation plays a vital role in defining a PC. It represents a debt a PC owes, whether it be physical, like money or intangible, like a sense of responsibility.
From the movies, think of the bounty that Jabba put on Han’s head. Or Chewbacca’s life-debt to Han. Obi Wan’s dedication to the Jedi code. Lando’s betrayl of Han. Leia’s sense of duty to the Rebel Alliance.
Mechanically, this is how it works:
Since there are three of you. You will each start out with an Obligation of 15.
You can put all 15 points into one Obligation or split it up into groups of 5.
You can purchase addition Obligation at Character Creation to give yourself more starting XP or Credits.
+5 Obligation will get you either +5 XP or +1,000 credits
+10 Obligation will get you either +10 Xp or +2,500 credits.
If you pick the same Obligation as another PC, we could work it into the story as a Group Obligation. You could all owe the same debt to a Crime Lord. Some or all of you could have a price on your head from the same Planetary Official. Maybe your shared Obsession with old Jedi or Sith relics is what brought you together.
As the GM, I put all of your Obligations and their values on a table and I roll a d100 Obligation Check at the start of the session. If I roll less than or equal to the groups total Obligation, then something related to their Obligation may introduce a complication during that session.
Everyone will reduce the Strain Threshold by 1 and the PC whose Obligation is triggered will reduce their Strain Threshold by 2. If I roll doubles, the Strain Threshold reductions are doubled.
These complications can be represented by tangible problems, like a bounty hunter or law enforcement officer finding you, a debt or favor being called. It can also be something intangible, like some anxiety or worry induced by your sense of duty that is distracting you.
Link to Starting Obligation chart