Hola. Una solución es combinar el código HTML general para los botones floating y botones follow en un widget “HTML personalizado”:
<div class="a2a_kit a2a_kit_size_40 a2a_follow a2a_floating_style a2a_vertical_style" data-a2a-scroll-show="0,100" style="left:10px; top:300px; background-color:transparent;"><a class="a2a_button_facebook" href="https://www.facebook.com/alquilerdefincasdeturismo" title="Facebook" rel="noopener" target="_blank"></a><a class="a2a_button_twitter" href="https://twitter.com/FincasdeTurismo" title="Twitter" rel="noopener" target="_blank"></a><a class="a2a_button_instagram" href="https://www.instagram.com/fincasdeturismo/?hl=es" title="Instagram" rel="noopener" target="_blank"></a><a class="a2a_button_pinterest" href="https://www.pinterest.es/fincasdeturismo/" title="Pinterest" rel="noopener" target="_blank"></a><a class="a2a_button_linkedin" href="https://www.linkedin.com/in/fluvia-ines-fernandez-180a094b/" title="LinkedIn" rel="noopener" target="_blank"></a><a class="a2a_button_tumblr" href="https://www.tumblr.com/blog/alquilerdefincas" title="Tumblr" rel="noopener" target="_blank"></a><a class="a2a_button_youtube_channel" href="https://www.youtube.com/channel/UCH8z86n_1AoeYBsfr3MPZTA" title="YouTube Channel" rel="noopener" target="_blank"></a></div>