Cool, so the police officer is driven by his cravings for donuts and other baked goods, which causes trouble for him, his family, his colleagues, etc. and somehow will also cause trouble for Bill in this story. (IC Concern: Innermost Desires)
"Maintaining order" sounds more like an activity but I totally see what you're getting at, let's call it hating disorder. He just hates it when people break or even bend rules, he's not willing to compromise, and this causes trouble for people because, doesn't everyone need to bend the rules sometimes? (IC Domain: Fixed Attitude)
One thing to note is that you can choose more than one "gist" for each story point, like along with cravings for donuts the police officer is also afflicted with longings or has a huge crush on someone. But for this simple exercise let's keep it to one thing.
The next part might be tricky to grasp. Basically, because we've chosen the police officer as the IC, it means that Bill and he are going to have some kind of relationship in this story. Maybe they start off knowing each other already, like the police officer is Bill's brother or cousin or mom, or the guy that in school he looked up to / bullied / was bullied by. (I wouldn't make it the girlfriend as she's too much in the MC throughline.) Or they meet for the first time, and somehow influence each other enough that the reader/audience can sort of sense this relationship growing in the space between them, even if it's a small thing.
With this simple story, it will be easier to make it someone Bill knows already, but I'll leave it up to you. Anyway, the Relationship Story Domain is
Manipulation/Psychology and the Concern is
Changing One's Nature / Becoming (I include the old terms because often they fit a lot better). As with the other throughlines, it's better if you can keep it separate especially from OS, like make up a relationship that doesn't have anything to do with the burger; we can always weave in the burger quest after.
EDIT: before you try to define the Domain/Concern, come up with the type of relationship, like brothers, old friends, rivals, colleagues, mentor/mentee, etc. And let me know if you need help with examples of this Domain/Concern, this is where the Mac version of the software totally shines with all its 'gists'.