Hello guys, i would like to know the way to set NPC, mobs, to respawn by my own timer parameters.
Can anyone help me ? My users are requesting it, so i have no choise, the epics must come back to die more and more !

All objects respawn based on the the timeframe the cell is set to respawn.
You can force this IF its an interior cell. It 'may' work for exterior cell, but I have never tested it.
http://www.creationkit.com/Reset_-_Cell

But the player must exit the game for the reset to work since it must also be unloaded from memory before it takes effect.

thank you very much WillieSea, i can't change the respawn process but now i clearly know how it works

You could write a script to bring actors back / spawn new copies or something like that

know if anyone's made a script like that yet|?

Leveled actor lists usually respawn. Use one of them.

No, idk if anyone's written a script like that, I doubt it would be that hard to do this, depending one exactly what it is you want