Spawn Killing - extra time to get away?

[Uri]

Hi:

I'm sure I saw this before but I can't find it now. I would like to set a time for spawning players to get away from a spawn point without damage or being killed. Any idea where I can find info on this? Your help is much appreciated.
Thanks
Uri

[Anex]

I believe CoDam has this feature:

http://www.iwnation.com/Hosted/CoDaM/