How to spawn character on desired position using UNET/Customized Network Manager??

hii everybody....well i need help...I am working on a multiplayer FPS game using UNET...right now I have created two GUI buttons named as "Russian Army" and "American Army"...so now I want to customize the "Network Start Position" of player...i don't know how to do it...spawn point of player should be dependent upon the selection of team...Currently there are two spawn points in the game following the "Round Robbin Spawn method in Network Manager"...Thanks in advance and your knowledge on this subject would help me tremendously...