Formula 3+2/6 consists of:
3 — the number of resources of this type on the task (Main operator, Operator 1 and Operator 2)
+2 — the number of resources of this type on other tasks during the period of this task (Operators 3 and 4 – they are busy on other filming at this time). You can add them to the task, but this will cause Conflict
/6 — total number of resources given type in the project (Main operator and operators 1,2,3,4,5)