Barber Shop Walk-In Check-In System

I want to build a self check-in system for my walk-in clients when they walk into the barbershop basically it’s going to put them on a waitlist that fills the times and availabilities of the barbers so before each day, I would want the barbers to come in and because I’m not going to have access to their calendars or their schedule for the day they would have to come and input the times that they are available on the software so the clients then could be put in line to be with the next available. Barber and I want it to display on a monitor that shows names wait times and when the client checks in, I would like the system to take their name and number down and email and after they check-in, all they have to do next time is put in their phone number and they will be saved in the system. The reason for this I also want to collect their data so I could reach out to them and market to them through this software as well. What do you suggest I do because my Barber‘s no longer want to deal with fresher or squire they don’t like the apps they’re complaining about them and they want me to just put their personal links back on the website cause that’s how we used to have it. I think putting their links back on the website would work for me as long as I’m able to keep my walk-ins in order.