Safe Combination

[Octarin]

For anyone headdesking like me to understand what CS/OO/BD means, it refers to the number of people in each position. Inordinately vague.

[Queendom]

There is also an in-game hint on that puzzle, where Duck hints about the numbers and the departments.

[margiham]

SPOILER:
How many people work in Customer Service, Operating Office and the number of Bus Drivers?



There are only 2 desks in CS that anyone uses.
Freddy tells you he is the only 1 working in the OO.
The list in Freddy's office indicates there are 4 Bus Drivers