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Setting it up

To setup Ping on Join, all you need to do is run the following command on your server: 
/poj
You can use the dropdown menu to select which setting you want to edit. The delete after time determines when the message is removed. Setting it to 0 disables deletion.

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Adding/Removing channels

To add a channel, you can use the following command: 
/poj add <channel>
To remove a channel, you can use the following command: 
/poj remove <channel>