First I'd like to thank Mr. Scott Sheppard for developing this useful plugin
Here is my test animation
http://www.youtube.com/watch?v=0ykTTlEiC0EThe recommendations
I know most of the problems I faced is already mentioned in the user guide pdf file but here r the one which I cared for
-adding a constraint so that no character would disappear or appear in the camera view
-Switching lanes will be a good option
-Walking in sloped floors and heights other than z=0, climbing stairs and sitting on chairs
Overall it is a very interesting and important crowd plugin smile
Thanks...