network_site_new_form action-hook . WP 4.5.0

Fires at the end of the new site form in network admin.

Usage

add_action( 'network_site_new_form', 'action_function_name_8942' );
function action_function_name_8942(){
	// action...
}

Where the hook is called

do_action( 'network_site_new_form' );

Where the hook is used (in WP core)