diff --git a/openedx_cmi5_xblock/openedx_cmi5_xblock.py b/openedx_cmi5_xblock/openedx_cmi5_xblock.py
index f32a01e..200e2f7 100644
--- a/openedx_cmi5_xblock/openedx_cmi5_xblock.py
+++ b/openedx_cmi5_xblock/openedx_cmi5_xblock.py
@@ -21,7 +21,7 @@
 from webob import Response
 from xblock.completable import CompletableXBlockMixin
 from xblock.core import XBlock
-from xblock.fields import Boolean, DateTime, Dict, Float, Integer, Scope, String
+from xblock.fields import Boolean, DateTime, Dict, Float, Integer, Scope, String, List
 from xblock.fragment import Fragment
 
 from openedx_cmi5_xblock.utils.utility import (
@@ -121,6 +121,27 @@ class CMI5XBlock(XBlock, CompletableXBlockMixin):
         scope=Scope.settings,
     )
 
+    au_urls = List(
+        display_name=_('AU URLs'),
+        help=_('List of AU URLs'),
+        default=[],
+        scope=Scope.content,
+    )
+
+    current_au_index = Integer(
+        display_name=_('Current AU Index'),
+        help=_('Index of the currently displayed AU URL'),
+        default=0,
+        scope=Scope.user_state,
+    )
+
+    total_au_count = Integer(
+        display_name=_('Total AU Count'),
+        help=_('Total number of AU URLs'),
+        default=0,
+        scope=Scope.content,
+    )
+
     has_author_view = True
 
     def author_view(self, context=None):
@@ -171,9 +192,13 @@ def student_view(self, context=None):
             'CMI5XBlock', json_args={
                 'popup_width': self.width or 800,
                 'popup_height': self.height or 800,
+                'au_urls': self.au_urls,
+                'current_au_index': self.current_au_index,
+                'total_au_count': self.total_au_count,
             },
         )
         return frag
+        
 
     @XBlock.handler
     def lrs_endpoint(self, request, _suffix):
@@ -260,6 +285,22 @@ def studio_submit(self, request, _suffix):
             response['errors'].append(e.args[0])
         return json_response(response)
 
+    def launch_au_url(self, url):
+        """Handles the multiple AUs and append launch params with url."""
+        if not self.package_meta or not url:
+            return ''
+
+        lms_cmi5_url = ''
+        if is_url(url):
+            lms_cmi5_url = url
+        else:
+            folder = self.extract_folder_path
+            lms_cmi5_url = requests.utils.unquote(self.storage.url(os.path.join(folder, url)))
+        
+        params_joining_symbol = '&' if is_params_exist(lms_cmi5_url) else '?'
+        lms_cmi5_url = lms_cmi5_url + params_joining_symbol + self.get_launch_url_params()
+        return lms_cmi5_url
+
     # getters and setters
     def get_credentials(self):
         """
@@ -397,6 +438,7 @@ def index_page_url(self):
         lms_cmi5_url = lms_cmi5_url + params_joining_symbol
         return lms_cmi5_url + self.get_launch_url_params()
 
+
     @property
     def extract_folder_path(self):
         """
@@ -486,9 +528,11 @@ def update_package_fields(self):
         prefix = '{' + namespace + '}' if namespace else ''
         self.set_course_detail(prefix, root)
 
-        au_url = root.find('.//{prefix}au/{prefix}url'.format(prefix=prefix))
-        if au_url is not None:
-            self.index_page_path = au_url.text
+        au_urls = root.findall('.//{prefix}au/{prefix}url'.format(prefix=prefix))
+        if au_urls is not None:
+            self.index_page_path = au_urls[0].text
+            self.au_urls = [self.launch_au_url(au_url.text) for au_url in au_urls]
+            self.total_au_count = len(self.au_urls) 
         else:
             self.index_page_path = self.find_relative_file_path('index.html')
 
diff --git a/openedx_cmi5_xblock/static/html/openedx_cmi5_xblock.html b/openedx_cmi5_xblock/static/html/openedx_cmi5_xblock.html
index 1d0bfda..548680b 100644
--- a/openedx_cmi5_xblock/static/html/openedx_cmi5_xblock.html
+++ b/openedx_cmi5_xblock/static/html/openedx_cmi5_xblock.html
@@ -11,6 +11,8 @@ <h3 class="xblock-title mb-2">{{title}}</h3>
             height="{% if cmi5_xblock.height %}{{ cmi5_xblock.height }}{% else %}450{% endif %}"
         >
         </iframe>
+        <button id="nextButton">Next Assessment</button>
+        <button id="prevButton">Previous Assessment</button>
     </div>
     {% elif message %}
     <p>{{ message }}</p>
diff --git a/openedx_cmi5_xblock/static/js/src/openedx_cmi5_xblock.js b/openedx_cmi5_xblock/static/js/src/openedx_cmi5_xblock.js
index b3aa533..ee98851 100644
--- a/openedx_cmi5_xblock/static/js/src/openedx_cmi5_xblock.js
+++ b/openedx_cmi5_xblock/static/js/src/openedx_cmi5_xblock.js
@@ -1,5 +1,5 @@
 /* Javascript for CMI5XBlock. */
-function CMI5XBlock(runtime, element) {
+function CMI5XBlock(runtime, element, settings) {
 
 
   $(function ($) {
@@ -10,5 +10,55 @@ function CMI5XBlock(runtime, element) {
     */
 
     /* Here's where you'd do things on page load. */
+        var nextButton = $('#nextButton');
+        var prevButton = $('#prevButton');
+        prevButton.prop('disabled', true)
+        if(settings.total_au_count === 1){
+          nextButton.prop('disabled', true)
+        }
+
+        nextButton.click(function () {
+          
+          console.log("the au_urls are : ", settings.au_urls)
+          console.log("total au count : ", settings.total_au_count)
+          console.log("current au index: ", settings.current_au_index)
+
+          
+          
+          if(settings.current_au_index < settings.total_au_count-1){
+          settings.current_au_index+=1
+          prevButton.prop('disabled', false)
+          
+            if(settings.current_au_index === settings.total_au_count-1){
+              nextButton.prop('disabled', true)
+            }
+
+          }
+        
+          
+          $('.cmi5-embedded').attr('src', settings.au_urls[settings.current_au_index]);
+
+          });
+
+          prevButton.click(function () {
+          
+            console.log("the au_urls are : ", settings.au_urls)
+            console.log("total au count : ", settings.total_au_count)
+            console.log("current au index: ", settings.current_au_index)
+            
+            if(settings.current_au_index > 0){
+            settings.current_au_index-=1
+            nextButton.prop('disabled', false)
+
+              if(settings.current_au_index === 0){
+                prevButton.prop('disabled', true);
+              }
+            }
+            
+            
+            $('.cmi5-embedded').attr('src', settings.au_urls[settings.current_au_index]);
+  
+            });
+
   });
 }