The adventures written for the Starfinder Society campaign are Starfinder Society Scenarios: 2-3 hour adventures, each a single episode in a continuing story.
Rules for additional types of adventures can be found in GM Options: Additional Adventures.
Level Ranges
In a typical home game, the PCs are all the same level and face challenges tailored to their level. In Organized Play, more flexibility is necessary so characters of different levels can participate smoothly in the same adventure. Each adventure lists the character levels that are eligible to play it, as well one or more level ranges within the adventure.
Legal Table Size
Starfinder Society adventures are written for four to six PCs.
Maximum Table: Tables cannot have seven or more players.
Minimum Table: A GM can run a table with two or three players in some situations. See Table Size Scaling for details.