I've served jury duty in Broward County a few times. This area is much bigger than Pinellas. Our main jury holding room seats probably 2500! Yes, its that big. Its like a theatre type room. Podium at front - several flat screens throughout the room that show whoever is talking at the podium.
You have a number - like these we've seen - you are only referred to by that number. You check in - fill out a short form - basic questions - don't remember any about whether or not you're being pd - but I guess they can substitute questionnaires in and out. You sit in that room - as a judge needs a jury pool - they come to the podium and call numbers. If you're called - you meet a baliff and off to that judge's courtroom. You can sit there all day or be called.
I think that's probably kinda what they do here. These people are called for jury duty - usually by mail - you get a postcard thingy with your juror #. You never know where or what judge or even what case you'll be called for - if you are called at all.
Judges put in "orders" by what their calendars predict with trials and such. The orders are all added up and then a request is made and using the DL records people are picked that live within the jurisdiction.
HTH
