Well the string section is spread out from left to right on the stage/recording environment. The violinists get split into two sections first and foremost for balance from left to right in the stereo field. But secondly so that even if the string section isn't playing divisi they can play 5 different notes to make up a chord/harmony. In full orchestras on stage, if you youtube, to the left/left center there will be 16 1st violinists and 14 2nd violinists. The reason there are 2 more in the 1st violin section is because they typically take the higher line of the melody so it cuts through more.
There are different ways to score strings of course. Sometimes a cello melody up high can sound wonderful with violins sustaining chords down low. But generally from 1st vln, 2nd vln, vla, cl and db, the notes will be distributed by pitch from high to low in the aforementioned order. When you use 8Dio Adagio you'll need 2x violins and have one panned further left and one left center. Though in pop strings seem to not be spread so far left and right, but one can still hear they are divided, I mean...they must be due to the physics of the universe that dictates umpteen humans can't all sit at the exact same spot. ;p