I have installed a master site and slave site. Created template, shared joomla users, jom social but no any synchronisation of users. I did make slave site in same DB with other prfix. If I create account in slave site I can`t looking this account in master site. Help me please for fix this problem. My e-mail: info@at-co.ru

Have you followed the procedure as described in the tutoral step 16 and that show you how to share the users.
www.jms2win.com/tutorial

I remember you that the user sharing is a functionality that is only available when you create the DB and that can not be modified later.
You can use the JMS tools to check if you have correctly create the links between the websites.

Here it is the direct link to the tutorial step 16
tutorial.jms2win.info/jms12x/usersharing/index.html

I have 2 sites (as sample):

www.country.com (master)
www.city1.com

www.portal.com have installed jom social

I need make synchronisation of users and jom social for both sites

What I can make it? Can you help me with this if I give you account info?

If you want that we setup or configure directly your account, this is possible with billable support that you can order at www.jms2win.com/download?page=shop.produ...35&category_id=1

JMS does not perform synchronisation but provide a sharing functinoality.
The major difference between synchronisation and sharing is that in case of synchronisation, you duplicate the information. In the case of sharing the information is present only once in the website that is the recipient of all the other website.
With JMS, the user sharing or extension sharing is something that is decided when you create the website because this impact the DB layout itself.
Convert an existing website that may already have users into a "user sharing" is not easy because you may already have plenty of dependencies associated to the user ids.

So in your case, as the website seems exists, and perhaps that the users that must be shared are present in the "www.portal.com" that does not seems to be a slave of the master, this would require a special analysis to see if it is possible.
Normally the procedure for "user sharing" is the one described in the video tutorial step 16
www.jms2win.com/tutorial
or direct link tutorial.jms2win.info/jms12x/usersharing/index.html