Is there a method to move this below the Reply button on the message content page?

if ( apply_filters( 'fep_filter_ajax_form_submit', true, $where ) ) {
			wp_enqueue_script( 'fep-form-submit' );
			echo '<div class="fep-progress-bar"><div class="fep-progress-bar-inner"></div></div>';
			echo '<div class="fep-ajax-response"></div>';
		}

I have my file upload arranged to the left of the page at the moment and the button on the right, but when I submit they're split. Preferably, I'd like the notifications below or above the upload and reply button, but not between them. I was going to use CSS and a flex-box, but there's no wrapper for those elements.