Forcing Info_Survival_Position will allow you to spawn your survivors in specific locations anywhere in the map. You will have more control of who spawns where. Using info_player_start, that control is gone.
Learn how to add more variety to your gameplay by forcing info_survivor_position.
L4D Mapping: Force Info Survival Position Spawn - Video Tutorial
Notes:
1. Delete any info_player_starts
2. Place info_survivor_position into your map. Place 4 info_survivor_positions.
3. Open up the properties and name each info_survivor_position under survivor_name, name each one with the survivor you want to spawn.
Zoey, Bill, Francis and Louis
4. Place info_director into your map and name the info_director. In my case I named it director.
5. In the director properties under Output Tab, we will set up 2 output properties.
One:
My Output Named: OnGamePlayStart
Target Entity Named: director
Via this Output: ForceSurvivorPosition After Delay in Seconds: 0
Two:
My Output Named: OnGamePlayStart
Target Entity Named: director
Via this Output: ReleaseSurvivorPosition After Delay in Seconds: .01