Datasets for K2 plugin will help you to create multiple sets of K2 extra fields for the same K2 item, where original K2 only support one extra fields group for a specific item.
Installation & Upgrade: AutoMeta for K2 installation and upgrade is done from Extension Manager like other Joomla! extensions. It is installed as K2 plugin inside the plugins/k2 directory. Make sure to Enable/Publish the plugin from Plug-in Manager.
Installation & Upgrade: MEFG installation and upgrade is done from Extension Manager like other Joomla! extensions. It is installed as K2 plugin inside the plugins/k2 directory. Make sure to Enable/Publish the plugin from Plug-in Manager.