Only admins can use this command
mafia changePrefix "[new prefix]" command is for servers that feel like typing out mafia [command] is too tedious or have a bot that already uses mafia as a prefix for the commands. Please bear in mind that the prefix is absolute and spaces before or after inside the quotation marks will be checked for. In other words a prefix of m is different to m. m would allow m series to be called where as m would allow mseries.