The idea using this component is to have registered users and upcoming new registered users synchronized from one site to all other listed subsites. F.ex. you have installed the component at the Main Site, where the user makes a new account or there are some existing registered users. In the component you list which other sites to have the user being registered on. After you have synchronized the users manually once, you dont need to do this again. New users are handled by auto - also if they change user info. BUT: It could also be the other way around: You have a subsite with registered users or new users are registered and you want them to be registered on the Main Site. So there are really many ways to handle this by choosing which sites to address. The synchronization is done ON ALL THE SERVERS YOU HAVE ACCESS TO!! In Joomla (the Main Site) you install the component called SynchronizeUsers via Installers – Components You go to Components – SynchronizeUsers – Set source site: Here you see a page where you must enter the info for the source site. The default values for Main Site is shown but can be changed to another site. You go to Components – SynchronizeUsers – List Subsites: Here you see a page ready to list the added subsites to have synchronized – now it is empty. Click the button Add Write a Name, the URL to the subsite database, the database name + db-user + password Click the button Add Subsite And so on – When all the wanted subsites are listed go to Components – SynchronizeUsers – Synchronize. Here you see a page with all the subsites listed. There is a check box at the beginning of each listed subsite – if you check this, the subsite is included in the operation to come. When the wanted subsites are checked you press the button Synchronize and the users from the Main Site are merged/written in the selected subsites database. In this way existing users in the Main site database are handled (this is only needed if the component is installed after having users being registered. If it is a new Joomla install without any users this sync is not needed!). If a user or an e-mail already exists the user is not written to the database but is shown on a error list after the operation. Now all the users from the Main Site are in the database for the selected subsites . SO: from now the synchronizing is done automatically FOR THE LISTED SUBSITES when a user register on the Main site. Go to Components – SynchronizeUsers – About License Here you can see some info about the license disclaimer. The license is for ONE install on ONE domain. There is a discount for more licenses. Look at the tutorials at http://www.elearningforce.dk/index.php?option=com_content&task=view&id=67&Itemid=89 MORE INFO AT www.elearningforce.dk