The `sn` attribute is the short name code.The `url` attribute can be any image url than your browser can access, or a [Data URL](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URLs) representing the file you want to import.
To enable or disable this feature, use the [chat dropdown menu](/peertube-plugin-livechat/documentation/user/viewers), open the "configure" menu.In the form, you will find a "{{% livechat_label emoji_only_mode_title %}}" checkbox.
If you want to enable it for all your chatrooms at once, open the [channel emojis configuration page](/peertube-plugin-livechat/documentation/user/streamers/emojis/), and use the "{{% livechat_label emoji_only_enable_all_rooms %}}" button.
As a streamer, you can choose to delay messages in the chat, to let some time to moderators to delete messages before they can even be read by other participants.
Please note that messages sent by moderators will also be delayed, to avoid them to respond to messages that are not even visible by other participants.
On the [channel configuration page](/peertube-plugin-livechat/documentation/user/streamers/channel), you can set the "{{% livechat_label moderation_delay %}}" option:
![Screenshot of the channel option form, with a field to configure the moderation delay.](/peertube-plugin-livechat/images/moderation_delay_channel_option.png?classes=shadow,border&height=400px "Channel configuration / Moderation delay")