Stop Booking Twice Help Please!

[2 Advanced]

Hi, im struggling with my project. I'm not sure how to pursue this, but when i a customer to book a lesson, i want the booking to be not booked twice.

So i have to prevent the date of when the customer wants his/her lesson to be booked on the same day as the other person.

I'll be very very grateful if anyone can help me with this.


Thank You!

 

[RuralGuy]

See if MVP Allen Browne can help here: Clashing Events/Appointments