well I am propably not answering your question… but.
when creating a server config u might do class restrictions… this I am for sure… I am not sure tho if a map can force a change in server config… if yes that would be a major leak cause there would be maps released that would let the mapper overtake the server by for exemple changeing the rcon pass…
But as long as the map u want to make runs on your server… where u set the config…
or As long as you explain how the map should be run:
for exemple if make a read.me file with explanation how the map should run.
It is just as easy as makeing a sandwitch.
ETAdmin_MOD has sum additionall features, but still I am not too sure if your map can mess with the server config or etadmin config…
The best way to over-walk this is just to write a READ.ME file IMO.
Maybe others would have better ideas… I am not the best you kno… 