I need create custom language settings for my site (or may be page). In the picture possible see an example of what I mean. http://s24.postimg.org/6el5mnxmt/custom_language_settings.png
If someone is doing such a task tell me how to do this.
Thanks in advance.
I think you will find it hard to add stuff at that location. There is no Plug-in available so any solution would be a hack that is hard to maintain when you upgrade to a new version of EPiServer.
I recommend that you look for another approach maybe using Dynamic Properties (i e globally defined properties available on all page types where the value is inheretied).
You have many better locations to extend the user inteface. Eeasiest is probably a GuiPlugin in the admin tool menu or admin config menu.
Thank you very much for your response. And also thank you for the proposed solution, which I certainly will use.