Open any prefix config at prefixes folder, you will find below content:
# Premium version onlygroups: - chat - example
The groups option determines which groups does this tag belong to. You don't need do anything to create new tag group, you just need put a randomly selected IDs here, the plugin will automatically classify them for you!
What this feature can do?
You can use command /prefix opengui <groupID> to open a GUI which only includes the tag of the specified group. For more info, please view Commands page.
You can use display-prefixes.group option in display placeholder configs to determine which tag will display in this display placeholder. For more info, please view Display placeholder page.
You can determine max prefixes amount by group in config.yml file. For more info, please view Maximium Tag Limit page.