How to set up Multisite WordPress site on your hosting?
To enable the Network Setup menu item, you must first define multisite in the wp-config.php file.
Open up wp-config.php and add this line above where it says /* That’s all, stop editing! Happy blogging. */.
If it doesn’t say that anywhere, then add the line somewhere above the first line that begins with require or include:
/* Multisite */
define( ‘WP_ALLOW_MULTISITE’, true );
Then login the site and enable the Network Setup item in your Tools menu. Use that menu item to go to the Create a Network of WordPress Sites screen.
You have two options: You can create either subdomain, or subdirectories.
After you choose one, you can log out and login again. Once you login, you will be able to choose and edit between the multi sites. This is common way to use WordPress for bilingual web sites.