TOPIC: attendee list Default

At some point an update in dt register changed the registrant view to pull the first and last name each individual registrant for the list to display. My members want privacy and demand that I not use their last name ( purpose for screennames) I can remember some place there were options to chose the fields to display. we used custom fields (camping site Number) and (City) to display on this list. I need to get these options to list and can not find where to do that. if there is not a admin option can you direct me to the file location where I make a change and can you provide any direction on how to change. This was a great option.
Greg

Wow, members here are great, I got an email, within 5 min of my post that this option is made via the field . in backend click on (FIELD) then (Last_Name) then scroll towards the bottom and opt to list or not by checking the box on the LISTING OPTIONS. Thanks once again