PlotMe is the plugin used to manage plots on the Creative Server. You must be the rank of builder on the Creative Server to use it. Read here for information on how to obtain builder. Be careful who you add on your plots. There is no way to check or rollback grief on the Creative Server.
/plotme help - Lists all PlotMe commands
/plotme info - Lists the players who own and are added onto the plot you are standing on
/plotme claim - Claims the plot you are standing on
/plotme auto - Teleports you to the nearest unclaimed plot
/plotme home - Teleports you to your plot
/plotme add <player> - Add a player to your plot
/plotme remove <player> - Remove a player from your plot