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

First, select it from the in-game mutator selection screen.
Second, add ?Mutator=CustomUTv1.UTMutator_CustomUT to your server's commandline.  An example commandline would be ut3 server dm-heatray?mutator=CustomUTv1.UTMutator_CustomUT

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".
 
bEnableMapVoting - Setting this to "false" will disable map voting on the server. Defaults to "true".


VotingPercentRequired - This is the percent of "yes" votes required for a vote to pass.  Defaults to "50.0" or 50%.

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".

 