Wait... are you asking "How do I (as the server admin) enable X, Y, Z features?"
or "How can I (as the server admin) set
custom votes to allow standard players to enable or disable such X, Y, Z options when they wish?"
Well, first you have to find the options you wish.
See:
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Manual/Gamemodes
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Special_game_options
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Configuration_examples
Some features aren't in "baseoa" at all... in this case you have to use a mod:
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Mod
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Manual/Using_mods
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Mods
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/ModCompat
Info about making a server:
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Servers
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Manual/Multiplayer
Console commands (you may find some command you may be interested to):
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Command_console (take a look to the externals links there, too)
(
DO NOT LINK) h t t p s : / / openarena . wikia . com/wiki/Manual/Console_Commands
Custom votes: at the moment you can read
this post.