To configure WordPress with multisite functionality, you can follow these steps:

1. Backup your WordPress site: Before enabling multisite, it’s important to create a backup of your WordPress site, including the database and files. This will allow you to restore your site if anything goes wrong during the configuration process.
2. Enable the WordPress multisite feature:

• Open the wp-config.php file of your WordPress installation in a text editor.
• Above the line that says “/* That’s all, stop editing! Happy blogging. */”, add the following line:
  php define('WP_ALLOW_MULTISITE', true);
• Save the changes and close the file.

1. Configure WordPress multisite:

• Open a web browser and log in to your WordPress admin dashboard.
• Go to “Tools” » “Network Setup”.
• Choose whether you want to set up multisite for sub-domains or sub-directories. This depends on your server configuration and domain structure. If you’re unsure, consult your hosting provider.
• Enter the network title and your email address, and click “Install”.
• WordPress will display some code that you need to add to your wp-config.php and .htaccess files.
• Open the wp-config.php file again and add the provided code above the line that says “/* That’s all, stop editing! Happy blogging. */”.
• Save the changes and close the file.
• Now, open the .htaccess file in the root of your WordPress installation (if it doesn’t exist, create a new file) and replace its contents with the provided code.
• Save the changes and close the file.

1. Log in to the WordPress multisite network:

• Log out of your WordPress admin dashboard if you’re still logged in.
• Log in again using your administrator account.
• After logging in, you’ll notice a new “My Sites” menu in the admin bar. From there, you can access the network admin dashboard and manage your multisite network.

1. Configure network settings:

• Go to “My Sites” » “Network Admin” » “Settings”.
• Review and adjust the network settings, such as site registration, new site settings, upload file types, etc., according to your requirements.

1. Add new sites:

• In the network admin dashboard, go to “My Sites” » “Network Admin” » “Sites”.
• Click on “Add New” to create a new site in your multisite network.
• Enter the necessary information, such as site address, site title, and admin email.
• Click “Add Site” to create the new site.

1. Configure site settings:

• In the network admin dashboard, go to “My Sites” » “Network Admin” » “Sites”.
• Locate the site you want to configure and click on “Edit” below its name.
• Adjust the site settings, such as site title, theme, plugins, etc., as needed.

That’s it! You have now configured WordPress with multisite functionality. You can continue to add new sites to your network and manage them from the network admin dashboard. Each site within the multisite network will have its own admin dashboard, allowing separate control and management while sharing themes, plugins, and user roles across the network.