setting up Appointments app

Hi All
I am trying to get the Appointments+ plugin working. http://www.pcperfect.co/make-an-appointment/
when i am logged in to wordpress admin, it allows me to make a booking, but when i am logged out it does not, which wont be any good to anyone trying to book an appointment.
also is there anyway to make the dimensions not so wide as part of the drop downs are being cut off.