Mobile prefix and SMS tick box visible for just one staff member.

One of our Staff Member's bookings looks different to everyone else, this has only just changed, it used to look the same as everybody else's. (maybe the IT team changed a setting in the background).

Does anyone know what setting would do this and where that setting is so that we can change hers back?

She suddenly needs to put a prefix to the phone number, and has a checkbox for SMS's (we are in Australia so we don't have SMS as an option).

The Single Staff Member's Bookings looks like this

Everybody else's looks like this