only need to add this attributes – to make styles navigate to Group Chat invite ( num attribute is not needed )
type – ( group_chat or any thing ) to make the link navigate to group chat then add attribute ( type=group_chat ),
If default value changed to group_chat in setting page, then to make the link navigate to private chat room then add attribute type=chat
or type=anything-other-then-group_chat
group_id – to change the group chat id
Example
[chat style=4 type=group_chat val='Hello Shop' ]
Hello Shop
By default it will get group-id from admin setting page to change it
add attribute ‘group_id‘
[chat style=4 type=group_chat group_id='9EHLsEsOeJk6AVtE8AvXiA' val='Discount group' ]
Discount group