diff --git a/README.md b/README.md
index 557783d..4674a43 100644
--- a/README.md
+++ b/README.md
@@ -1,30 +1,12 @@
 # Outlook
 
-### Status
-[![Build Status](https://travis-ci.org/Symplicity/outlook.svg?branch=master)](https://travis-ci.org/Symplicity/outlook)
-[![Latest Stable Version](https://poser.pugx.org/symplicity/outlook/v/stable)](https://packagist.org/packages/symplicity/outlook)
-[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/Symplicity/outlook/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/Symplicity/outlook/?branch=master)
-[![Code Coverage](https://scrutinizer-ci.com/g/Symplicity/outlook/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/Symplicity/outlook/?branch=master)
-[![License](https://poser.pugx.org/symplicity/outlook/license)](https://packagist.org/packages/symplicity/outlook)
-
 ## Installation
 
 Use composer to install Outlook package.
 
 ```
-$ composer require symplicity/outlook "^1.0"
-```
-
-# Usage
-
-We will be using Monolog Logger to log all info. Logger needs to be passed for all instance creations.
-
+$ composer require symplicity/outlook "^5.0"
 ```
-<?php
-$log = new Logger('outlook_sync');
-$streamHandler = new StreamHandler($file);
-$log->pushHandler($streamHandler, Logger::WARNING);
-```            
 
 ## Documentations
 - [Starting](docs/calendar-usage.md)
diff --git a/docs/calendar-usage.md b/docs/calendar-usage.md
index bc0d554..b35d12d 100644
--- a/docs/calendar-usage.md
+++ b/docs/calendar-usage.md
@@ -1,10 +1,9 @@
 # Starting with Calendar
 
-To start working with calendars simply extend the Calendar class. There are a bunch of methods that needs to be implemented
+To start working with calendars simply extend your class to the abstract Calendar class.
 
 ```
 <?php
-
 declare(strict_types=1);
 
 namespace YourPackage;
@@ -16,18 +15,13 @@ use Symplicity\Outlook\Entities\ResponseBody;
 use Symplicity\Outlook\Interfaces\Utils\BatchResponseInterface;
 
 class OutlookCalendar extends Calendar 
-{
-    public function isBatchRequest(): CalendarInterface 
-    {
-        return true;
-    }
-    
+{    
     public function saveEventLocal(ReaderEntityInterface $reader) : void 
     {
         // handle events received from outlook
     }
     
-    public function deleteEventLocal(ReaderEntityInterface $event) : void
+    public function deleteEventLocal(string $eventId) : void
     {
         // handle events deleted from outlook
     }
@@ -35,42 +29,54 @@ class OutlookCalendar extends Calendar
     public function getLocalEvents() : array 
     {
         // setup a return for all events that you want pushed to outlook calendar.
-        // For events that needs to be deleted create an instance of Delete class. You can also set up your own by implementing the DeleteInterface
-        // A Writer entity is setup for use but u can always create a new one for your specific use case, just make sure it implements WriterInterface
-        $event1 = new Writer()
-            ->setId('1')
-            ->setSubject('testing new outlook events')
-            ->setInternalEventType('Php Appointments')
-            ->setLocation(new Location(['DisplayName' => 'Test']))
-            ->setBody(new ResponseBody(['ContentType' => 'HTML', 'Content' => 'Testing Calendar']))
-            ->setStartDate(new ODateTime(new DateTime('2019-02-20 08:30:00'), 'Eastern Standard Time'))
-            ->setEndDate(new ODateTime(new DateTime('2019-02-20 09:00:00'), 'Eastern Standard Time'));
-            
-        $event2 = new Writer()
-            ->setId('2')
-            ->setSubject('testing new outlook events - 2')
-            ->setInternalEventType('Php Appointments')
-            ->setLocation(new Location(['DisplayName' => 'Test']))
-            ->setBody(new ResponseBody(['ContentType' => 'HTML', 'Content' => 'Testing Calendar']))
-            ->setStartDate(new ODateTime(new DateTime('2019-02-21 08:30:00'), 'Eastern Standard Time'))
-            ->setEndDate(new ODateTime(new DateTime('2019-02-21 09:00:00'), 'Eastern Standard Time'));
-            
-        $event3 = new Delete('guid', 'internalEventId')   
-                      
+
+        // Post event to outlook
+        $start = new \Microsoft\Graph\Generated\Models\DateTimeTimeZone();
+        $start->setTimeZone('Eastern Standard Time');
+        $start->setDateTime('2023-11-28 15:00:00');
+
+        $end = new \Microsoft\Graph\Generated\Models\DateTimeTimeZone();
+        $end->setTimeZone('Eastern Standard Time');
+        $end->setDateTime('2023-11-28 16:00:00');
+
+        $body = new \Microsoft\Graph\Generated\Models\ItemBody();
+        $body->setContent('This is a test event');
+
+        $event1 = new \Symplicity\Outlook\Models\Event();
+        $event1->setSubject('Test1');
+        $event1->setStart($start);
+        $event1->setEnd($end);
+        $event1->setBody($body);
+
+        // Delete event from outlook
+        $event2 = new \Symplicity\Outlook\Models\Event();
+        $event2->setIsDelete();
+        $event2->setId('ABC==');
+
+        // Patch event to outlook
+        $body = new \Microsoft\Graph\Generated\Models\ItemBody();
+        $body->setContent('Update event with extension');
+
+        $event3 = new \Microsoft\Graph\Generated\Models\Event();
+        $event3->setSubject('Update Event');
+        $event3->setId('ADB==');
+        $event3->setStart($start);
+        $event3->setEnd($end);
+        $event3->setBody($body);
+
+        $extension = new \Microsoft\Graph\Generated\Models\OpenTypeExtension();
+        $extension->setExtensionName('com.symplicity.test');
+        $extension->setAdditionalData([
+            'internalId' => '1232133'
+        ]);
+        $event3->setExtensions([$extension]);
+         
         return [$event1, $event2, $event3];
     }
     
-    public function handlePoolResponses(array $responses = []) : void 
+    public function handleBatchResponse(?BatchResponseContent $responses): void
     {
-          foreach ($responses as $id => $response) {
-                $outlookResponse = $response['response'] ?? null;
-                if ($outlookResponse instanceof BatchResponse && $outlookResponse->getStatus() === Promise::FULFILLED) {
-                    // Handle Fullfilled mappings.
-                } else {
-                    // Handle Rejected mappings.
-                }
-          }
+        // handle responses from push events request
     }
 }
-
 ```
diff --git a/src/Interfaces/CalendarInterface.php b/src/Interfaces/CalendarInterface.php
index 347eb1b..fe474ef 100644
--- a/src/Interfaces/CalendarInterface.php
+++ b/src/Interfaces/CalendarInterface.php
@@ -55,7 +55,8 @@ public function getEventBy(string $id, ?EventItemRequestBuilderGetQueryParameter
     /**
      * Method to get all instances of a series master
      * @param string $id
-     * @param InstancesRequestBuilderGetQueryParameters $params
+     * @param InstancesRequestBuilderGetQueryParameters|null $params
+     * @param array $args
      */
     public function getEventInstances(string $id, ?InstancesRequestBuilderGetQueryParameters $params = null, array $args = []): void;