Question re getting hand histories while observing tables

[Gator]

It seems to me that sometimes when I observing a table, I will get the hand histories downloaded to my hard drive. I'm not certain. Most, if not all of the time, I don't get the hand histories while observing. I only get them if seated at the table. Is there something I need to do to pull in the histories if I am observing, but not playing at a table. Thanks.