- Applies
- when the month's roster is built
- Enforcement
- Hard: never broken
- Who sets it
- Fixed in the product
- Family
- Teams and membership
- Roster style
- rotation (chunk/pattern)
verifiedCompiled from the product source on 12 September 2026
Rule catalogue · Teams and membership
Pattern blocks stay inside a person's own unit
Breaking it gives somebody a pattern block in a unit they are not a member of, so the roster cannot be operated.
What teams and membership rules protect
Most air traffic control units roster in teams, and team membership carries real constraints: people move together, some units share staff, and some people belong to a pool rather than a team. These rules keep those structures intact so that a generated roster is one the unit can actually operate, rather than one that is optimal on paper and unrecognisable on the floor.