ok im not really sure what your saying but all i understood i think is that you want a warning system well here is a tut/code that tells u how
http://www.smfsupport.com/support/smf_for_free_codes/code_warn_system-t4184.0.html

i hope it helps at all

There is nothing here that will do that.
There ARE several codes in the Codes Section for making a warning system.   Take a look thru the Index OR while in the Code area do a search and you'll find many.

okie dokie...   if its a screenshot from another forum please post the forum's url

if its a MOD...  you cannot add a mod to your forum and the warning mod has already (many times) been requested here in the Suggestion area.

The only thing we do have here, is as I said, some codes in the Codes area.. many created by Agent Moose and some directions in the Tutorials area for using the Custom Profile system.    Thats about it.

You cannot ad Mods to your forum.    SMF does that.  He adds Mods that he wants us to have.    The warning mod, as I said, has been requested before, so he is already aware of that one.    At the moment there is no Pro/Paid Service with SMF for Free so yes you would have to host the forum yourself.

btw... please in the future when posting screenshots use thumbnail images if the image is large
Here is a link for help with that if you need it:

How to Post Thumbnails