To add mods on your DayZ Standalone server you will want to do the following:   Switch your servers map type to "Custom" via the Game Server Control panel to enable the "Custom Launch Parameters" Upload all of the workshop mods you wish to use on the server via FTP to the base directory (Or add the id(s) of the mods to the Mod ID area on the panel to have the server download them for you) To activate the mods you will want to put -mod= followed by the mod you wish to activ