Hi. Well, a quick guide:
SmartFoxServer 1.x Discussions and Help - general discussion about the server, usually the client-side part or some general questions about the server like its performance, etc.
Server Side Extension Development - questions related with the server side part, which is the server configuration, extension code, best strategies for extension coding, etc.
BlueBox - Questions related with BlueBox
RedBox - Questions related with RedBox
Features Wish List - ideas or features that you would like to see implemented in SmartFoxServer
The Bug Trap - the section of the forums where you post bugs (usually server-side) that you may find when working with the server - not common ActionScript bugs.
Now regarding your question, I suggest you to first read the whole docs (at
www.smartfoxserver.com/docs) before diving into the code. As the error says, you can't send either kick or ban requests from an user which is not an Admin (aka Moderator).
With this, you need to make that user a moderator (check chapters 2.1 and 5.13 - specially the last one), before he may be able to send those type of requests.