What functionality occurs to adding "breaks" into a shift code entry

What does adding “breaks” to shift codes actually do? Does it adjust time to jobs in labor entry? Our breaks are “paid” so I’m not sure what adding them might do. Any insight would be appreciated. Thanks…

I know that lunch times reduce the labor hours; I would assume that “breaks” do the same. I’m guessing that this isn’t what you want for payroll processing.