Ticket #34739: 34739.2.patch

src/wp-admin/network/site-new.php

@@ -229 +229 @@
                         <td colspan="2"><?php _e( 'A new user will be created if the above email address is not in the database.' ) ?><br /><?php _e( 'The username and password will be mailed to this email address.' ) ?></td>
                 </tr>
         </table>
-        <?php submit_button( __('Add Site'), 'primary', 'add-site' ); ?>
+
+        <?php
+        /**
+         * Fires at the end of the new site form in network admin.
+         *
+         * @since 4.5.0
+         */
+        do_action( 'network_site_new_form' );
+
+        submit_button( __( 'Add Site' ), 'primary', 'add-site' );
+        ?>
         </form>
 </div>
 <?php