user field

hi,

#1 for some reason i cannot edit users profile fields related to Appointments +

below are the fields that for some reason are disabled ... would like to set email address for each user so that he/she get an email when someone books an appointment.

Appointments+

My Name
My email for A+
My Phone
My Address
My City
My Appointments as Provider

#2 also .. is there a way to have multiple selection ? ... for now i have time base set to 60 ... 1 hour ... but i would like to have the option for people to choose 1 hour... or 2... or 3