Bob,
For the pilots meeting you should have it start shortly after lunchtime on Friday to give yourself time for preparation activities. It may last two hours and you have stuff to do after the meeting.
You need an area large enough to accommodate the contestant’s planes for processing. You can have the planes brought in one by one and then returned outside, so you don’t have to have to contain all the planes at once in the room.
You will weigh the planes during the meeting, go over local rules, FAI rules questions, draw for circles and flying order, discuss circle procedures, and lay out contingency plans. You will print copies of the flight order for the next days flying and pass them out to the contestants. You will also print a special flight order list for the pull testers. After the pilots meeting the judges may use the room for an hour or so for a meeting to go over scoring (pilots can attend but are not to participate). After the pilots meeting the flyers will most likely go back to practice.
While the judges meeting is going on, you and your helpers will be entering the weight and flight order data into the program and printing score sheets and posters for Saturday’s flying. Printing the score sheets could take about an hour. You will need to take a program stick to FedEx Kinkos to print the big scores poster.
All together you will probably need the room for at most four hours. I think for the 2017 trials we rented the room for four hours and just barely made it due to some printer jam problems.
Frank