Most VoxelPlayer functionality happens automatically, but to use the coloured names for ranks on your server it is necessary to be running PermissionsEx as well (it will be automatically detected if installed on your server). An example regions.xml with comments is available here. Place your server's custom regions.xml file in in the plugins/VoxelModPackPlugin/ folder on your server. Server operators can reload the region file at any time and can also find the current world hash to allow the creation of server-specific region files.
Using this plugin allows clients running VoxelTextures to experience region-specified texture pack changes and other cool functionality such as welcome text and display of the current region name.
MINECRAFT VOXEL MAP ON A SERVER INSTALL UPDATE
Note: Latest VoxelModPackPlugin update is for 1.7.10, not 1.7.9.