I think that segment of really small restaurants of less than 10 employees wouldn't be facing a problem of scheduling processes to such a degree that they would be willing to pay. First, the lower number of employees reduce the need for such an app, and second, smaller restaurants are less likely to pay for services when they're operating on lower margins.
Best of luck though, and good luck with your aspirations to become an actor. :)
Best of luck though, and good luck with your aspirations to become an actor. :)