Tips and Techniques
Adding Groups and Permissions using PEX
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PermissionsEx is one of the most widely known permissions manager. Although it may look complex, it's easy once you grasp the concept.
Firstly, in the console, run /pex user (your-username) add permissions.*, then run /pex reload in the console. Now you have the permission to run PEX ingame.
Groups
To create a group, run /pex group (group-name) create.
To add players to a group, run /pex user (username) group set (group-name).
Permissions
To add permissions to a group, run /pex group (group-name) add (permission-node).
To remove permissions from a group, run /pex group (group-name) remove (permission-node).
Using /pex group (group-name) will show a list of their permissions.
Prefixes & Suffixes
Prefixes and suffixes show up in chat when a player speaks. It allows you to see their group.
To add a prefix, use /pex group (group-name) prefix set "(prefix)".
To add a suffix, use /pex group (group-name) suffix set "(suffix)".
To display these in chat, you need 2 additional plugins, Vault and Essentials Chat (or another chat formatting plugin).