To run a server with CustomUT, you have 2 options.

First, select it from the in-game mutator selection screen.
Second, add ?Mutator=CustomUTv1a.UTMutator_CustomUTv1a to your server's commandline.  An example commandline would be ut3 server dm-heatray?mutator=CustomUTv1a.UTMutator_CustomUTv1a

Here is a quick summary of the variables for server admins, contained in UTCustomUTv1.ini by default.

bEnableVoting - Setting this to "false" will disable all voting on the server.  This overrules any other voting settings.

bEnableColorskinsVoting - Setting this to "false" will disable voting for skin coloring on the server.  Defaults to "true".

bEnableHitsoundsVoting - Setting this to "false" will disable voting for hitsounds on the server.  Defaults to "true".

benablewarmupVoting - Setting this to "false" will disable voting for warmup on the server.  Defaults to "true".
 
bEnableGametypeVoting=True - Setting this to "false" will disable gametype voting on the server. Defaults to "true".

VotingGametypes[0-5] - Use the provided values in the ini as an example.  Gametypeclass is the actual class name of the gametype.  GametypeName is the name to provide to clients in the voting list. MapPrefix is the prefix of the maps that will be allowed for this gametype.  You can remove these lines to disable voting for that gametype.


VotingPercentRequired - This is the percent of "yes" votes required for a vote to pass.  Defaults to "51.0" or 51%.

VotingTimeLimit - This is the time before a vote will fail if not enough players have voted yes.  Defaults to "30.0" or 30 seconds.

EnableHitSoundsMode - This setting determines the type of hitsounds the server will use.  Valid options are "0", Disabled, "1", "Line-Of-Sight", and "2", Everywhere.  Defaults to "1", line of sight.

bEnableColorskins - Setting this to "False" will stop the players on your server from changing the colors of their skins.  Defaults to "true".

bEnableUnlimitedWarmup - Setting this to "true" will make warmup time unlimited, it will not end until all players have given their ready signals.  Defaults to "true". 

warmuphealth - This is the amount of health to give players during warmup.  Defaults to "199".

bAlwaysAllowWeaponThrow - Setting this to "true" will allow players to throw weapons even if weaponstay is set to "on".

 