The settings for fraglimit and timelimit are easy to set by the server:
"set fraglimit XX"
(where XX is the number of frags e.g. "set fraglimit 10")
"set fraglimit 0" for no fraglimit.
Same with timelimit in minutes: "set timelimit 10" = play this map for 10 minutes.
It's also possible to vote for a fraglimit with "vcall set fraglimit XX" iirc.