This code is to show user to go to specific section to configure that section in a theme.

user-customizer-configure

<?php

if ( current_user_can( 'customize' ) ) { ?>
		<div class="message">
			<p><?php _e( 'There are no pages available to display.', 'textdomain' ); ?></p>
			<p><?php printf(
				__( 'These pages can be set in the <a href="%s">customizer</a>.', 'textdomain' ),
				admin_url( 'customize.php?autofocus[control]=showcase' )
			); ?>
			</p>
		</div>
	<?php }