diff --git a/cara/apps/calculator/static/js/form.js b/cara/apps/calculator/static/js/form.js
index 8c9a9256..db3874a7 100644
--- a/cara/apps/calculator/static/js/form.js
+++ b/cara/apps/calculator/static/js/form.js
@@ -162,8 +162,9 @@ function require_hepa(option) {
 
 function require_input_field(id, option) {
   $(id).prop('required', option);
-  if (!option)
+  if (!option) {
     removeInvalid(id);
+  }
 }
 
 function disable_input_field(id, option) {
@@ -381,8 +382,8 @@ function parseValToNumber(val) {
 }
 
 function parseTimeToMins(cTime) {
-  var time = cTime.match(/(\d+)(:(\d+))/);
-  return parseInt(time[1]*60) + parseInt(time[3]);
+  var time = cTime.match(/(\d+):(\d+)/);
+  return parseInt(time[1]*60) + parseInt(time[2]);
 }
 
 /* -------On Load------- */
diff --git a/cara/apps/templates/index.html.j2 b/cara/apps/templates/index.html.j2
index e908fffb..477b57b5 100644
--- a/cara/apps/templates/index.html.j2
+++ b/cara/apps/templates/index.html.j2
@@ -28,12 +28,22 @@
                 <h2>Authors:</h2><br>
                 <div class="text-component-text cern_full_html" >
                   <p>
-                    <h4>Andre Henriques¹, Gabriella Azzopardi², James Devine³, Philip Elson⁴, Nicolas Mounet², Markus Kongstein Rognlien²</h4><br>
+                    <h4>Andre Henriques<sup>1</sup>, Gabriella Azzopardi<sup>2</sup>, James Devine<sup>3</sup>, Philip Elson<sup>4</sup>, Nicolas Mounet<sup>2</sup>, Markus Kongstein Rognlien<sup>2</sup></h4><br>
 
-                    ¹HSE Unit, Occupational Health & Safety Group, CERN<br>
-                    ²Beams Department, Accelerators and Beam Physics Group, CERN<br>
-                    ³Experimental Physics Department, Safety Office, CERN<br>
-                    ⁴Beams Department, Controls Group, CERN<br>
+                    <sup>1</sup>HSE Unit, Occupational Health & Safety Group, CERN<br>
+                    <sup>2</sup>Beams Department, Accelerators and Beam Physics Group, CERN<br>
+                    <sup>3</sup>Experimental Physics Department, Safety Office, CERN<br>
+                    <sup>4</sup>Beams Department, Controls Group, CERN<br>
+                    <span style="height: 10vh; display: block;"></span>
+                  </p>
+
+                  <h3>Acknowledgements:</h3><br>
+                  <p>
+                    We thank CERN’s HSE Unit, Beams Department and Experimental Physics Department for their continuous support. 
+                    Thanks to Doris Forkel-Wirth, Olga Beltramello, Letizia Di Giulio and Evelyne Dho for providing expert advice and extensively testing the tool. 
+                    We thank Fabienne Landua and the Design and Visual Identity Service for preparing the logo.  
+                    Thanks also to colleagues like Oriol Rios, Lina Dimovasili for the technical discussions and advice. 
+                    Many thanks to the work and research performed by world leading scientists in this domain: Prof. Manuel Gameiro, Prof. Shelly Miller, Prof. Linsey Marr, Prof. Jose Jimenez, Dr. Lidia Morawska, Prof Yuguo Li – their contribution was indispensable for this project.
                     <span style="height: 10vh; display: block;"></span>
                   </p>
                 </div>
diff --git a/cara/apps/templates/layout.html.j2 b/cara/apps/templates/layout.html.j2
index 869acc83..fddec817 100644
--- a/cara/apps/templates/layout.html.j2
+++ b/cara/apps/templates/layout.html.j2
@@ -92,13 +92,11 @@
   </div>
 
   <div class="dialog-off-canvas-main-canvas" data-off-canvas-main-canvas="">
-
-
     <header role="banner" style="display: block;">
       <img src="/static/images/hse_triangle_right_1.png" style="float:left; height: 65pt; margin-top: 7pt">
       <div class="header-wrapper" style="background: rgb(47, 52, 66); clear: none;">
         <div class="site-info col-sm-2" style="max-height: 76px;">
-          <div class="site-info__text col-lg-9 col-md-10 col-sm-9">
+          <div class="site-info__text col-lg-9 col-md-10 col-sm-9" style="overflow:hidden;">
             <a href="/" title="Home" rel="home">
               <img src="/static/images/cara_logo_white_text.png" alt="home" style="height: 150pt; margin-top: 7pt;">
             </a>
@@ -152,6 +150,11 @@
                             </a>
                           </li>
                         </ul>
+                        <li>
+                          <a href="/expert-app" target="_blank">
+                              Expert App (BETA)
+                          </a>
+                        </li>
                         <li>
                           <a href="https://hse.cern/covid-19-information">
                               Covid Information