Two sites joomla. One user base

Development of auto action component community builder joomla 3. Two sites with one user base. On the first site the user performs registration. Event triggers: - new user registration - password change - - change last name and first name fields (CB_name 1, CB_name2, CB_name3) Auto action sql. Code for Community builder extension. Jquery code. Create a copy user on the second website, the entry in C the name and surname in the fieldCB_name1, CB_name2, CB_name3. The second site is on a different server. Condition - knowledge of joomla