Hello,
there were many useful hints and examples of how to solve specific needs or add new features just by config language. However, it is hard to search and find them back in the archive after a while. Therefore I created a new wiki page to collect them.
If you see such example flowing on the mailing lists, take it and add it there or at least set the link to the mailing list post. Here is the page: http://www.kamailio.org/dokuwiki/doku.php/cfg-scripts-bank:main-index
I added first example that adds inside group dial feature. You can group users by interest and they can call each other using short numbers instead of entire extension. Check it here: http://www.kamailio.org/dokuwiki/doku.php/cfg-scripts-bank:group-dial
Practically is less than 10 lines, with loading additional modules and setting the parameters.
Looking forward to your contributions there!
Cheers, Daniel