How does disabling servers checking tips before all tickets are closed prevent theft?

[RedAlertConsulting]

Was told by a manager that he disabled all servers / bartenders from checking their financial report before all checks are closed, and mentioned he caught an employee who allegedly stole for a long time by being able to otherwise do this. Namely, he could see how much gratuity he accumulated while checks were still open. How was this possible to lead to theft? I could never figure out how it gave him an edge for theft that apparently made him a "pretty penny.

 

[jimmymcp02]

Not sure how yourhave the employee reports set up.
But if you add a store procedure to look for open checks then you can stop the employee from running the check out report.
See attachments

 

[jimmymcp02]

Here is the other setting