If you want the stream items to be generated as the person posting that status update on the page, when you post the status update, you need to post as the user instead of the page, http://take.ms/2h06F

That is, if I post the status update, but when generated stream items - 'NamePages' like this
It is incorrect.
Where can I to insert before the 'NamePages' language constant (Admin page)
Example - Admin page 'NamePages' like this

Or change order for all items except status generated user name instead of page name

I am not really sure what do you mean here by "NamePages". Can you please elaborate more on this please?

There is no settings for this but if you want, you need to customize this in /components/com_easysocial/themes/wireframe/streams/story/page/title.php

I wanted to paste the code -
<?php echo JText::_('COM_EASYSOCIAL_PAGE_ADMIN');?>

But it's not working

I have just tested this locally and it seems to be displaying the text correctly,

Source: http://take.ms/rsPYI
Output: http://take.ms/51YKK

I got it. But inserting the text is only to create status. And this text is inserted and to the other users.
But if it generates an activity stream for discussion it turns out. In Russian it is not correct is that the page creates discussion. Only users can create discussions. If it is hard to do I change the language file.