As for what you'll actually be doing, you're basically working at an adventurer's guild as a Rescue Team. As the name implies, you go out to rescue pokemon that have gotten lost, gotten trapped, gone missing, been kidnapped, etc. Though your duties aren't limited to just that. Sometimes you go out for scouting, finding items, delivering things, escorting pokemon, the works. Your guild typically has job listings up on a job board where you can pick and choose what kind of quest you want to go on. Sometimes however, pokemon may request your team specifically for one reason or another, or your guild leader may send you out on a specific mission for one reason or another.