Increasing Respawn Times

I’m hosting a server that me and my friends get on from time to time. I was wondering if there was a way to increase respawn times. I’ve tried a lot of things but nothing has worked so far.

You can’t by default in sandbox.

Couldn’t you override the click to respawn/default function and then do a timer on death to respawn them?

Okay, but how would I go about doing that? My knowledge on Lua is very limited.