SOLVED !!! How to hide dial code dropdown list

Hi!

I am trying to hide the country dial code dropdown list on booking form. I only accept bookings from a certain country so the possibility to choose the country dial code is unnecessary for me. (But I do need the telephone numbers)
Any ideas?

Thank You

Hi

Not sure what's dial code. However, I believe you can go to Events Booking -> Custom Fields, find that custom field to unpublish it

After that, it will work as expected

Tuan

No, it's not a custom field. This is in the booking form window, after a user had chosen an available time slot. Please take a look at the attached screenshot (I marked it with a red arrow).