Photoshoots

[callygal1.livejournal.com]

hello! I'm new to the community. I went to the con  last year and am going again this year. I am sure this has already been asked, but I was curious how the photoshoots worked as I haven't done one before? I bought a shoot for Joe Flanigan for Friday from Froggy photos and wondered how we find out the time and the place of the shoot? And also do we just print out a receipt of our paypal transaction or what do they need when we show up ?  
thanks !