diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..695b512
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+access_rights_update.log
\ No newline at end of file
diff --git a/README.md b/README.md
index cffc295..0e2e9c8 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,11 @@
 # EXCAL-ARIGHTS
 
+[![Donate][link-icon-coffee]][link-paypal-me] [![Website][link-icon-website]][link-website]
+
+[link-icon-coffee]: https://img.shields.io/badge/%E2%98%95-Buy%20me%20a%20cup%20of%20coffee-991481.svg
+[link-paypal-me]: https://www.paypal.me/EndMove/2.5eur
+[link-icon-website]: https://img.shields.io/badge/%F0%9F%92%BB-My%20Web%20Site-0078D4.svg
+[link-website]: https://www.endmove.eu/
+
+## Description
+
diff --git a/configs.ps1 b/configs.ps1
index f238f5c..e0928b8 100644
--- a/configs.ps1
+++ b/configs.ps1
@@ -10,17 +10,28 @@
  # @link        https://git.endmove.eu/EndMove/excal-arights
  #>
 
- # Permission to use (define current by this one)
- $permission = "LimitedDetails"
+#  Availables Permission
+#  - AvailabilityOnly
+#  - LimitedDetails
+#  - Reviewer
+#  - Editor
+# Permission to use (define the triggered permission by this one)
+$Permission = "LimitedDetails"
 
- # Name of the calendar folder in the user's calendar
- $calandarFolders = @("Calendar", "Calendrier", "Kalender")
+# Permissions trigger ()
+$PermissionsTrigger = @("AvailabilityOnly")
 
- # Alias of account to be skipped (an alias, is the email prefix ahead of the @domain.com)
- $ignoreAlias = @("raoul.nihart", "brecht.marsoul")
+# Name of the calendar folder in the user's calendar
+$CalandarFolders = @("Agenda", "Calendar", "Calendrier", "Kalender")
 
- # Email of the Administration account to use
- $adminAccount = "endmove@luminussolutions.be"
+# Alias of account to be skipped (an alias, is the email prefix ahead of the @domain.com)
+$IgnoreAlias = @("raoul.nihart", "brecht.marsoul")
 
- # Logs file in which log all process
- $logFile = "access_rights_update.log"
\ No newline at end of file
+# Email of the Administration account to use
+$AdminAccount = "admin@luminussolutions.be"
+
+# Logs file in which log all process
+$LogFile = "access_rights_update.log"
+
+# Script name
+$ScriptName = "EXCAL-ARIGHTS"
\ No newline at end of file
diff --git a/dev-note.txt b/dev-note.txt
deleted file mode 100644
index f573b46..0000000
--- a/dev-note.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-Get-ExecutionPolicy
-
-Set-ExecutionPolicy Unrestricted
-Set-ExecutionPolicy Restricted
\ No newline at end of file
diff --git a/run-script.ps1 b/run-script.ps1
new file mode 100644
index 0000000..52961a7
--- /dev/null
+++ b/run-script.ps1
@@ -0,0 +1,66 @@
+<##
+ # EXCAL-ARIGHTS - runable script (entrypoint)
+ # 
+ # @version     1.0.0
+ # @since       08-25-2022
+ # 
+ # @author      Jérémi Nihart <contact@endmove.eu>
+ # @copyright   © 2022 EndMove, All rights reserved.
+ # 
+ # @link        https://git.endmove.eu/EndMove/excal-arights
+ #>
+
+# Setup script
+$Root = (Split-Path $MyInvocation.MyCommand.Path -Parent)
+. $Root\configs.ps1
+. $Root\utils\functions.ps1
+Import-Module ExchangeOnlineManagement
+Add-Type -AssemblyName PresentationFramework
+
+# Start logging
+Start-Transcript -Path $Root\$LogFile -Append
+
+# Statistics variables
+$CountOK = 0
+$CountUpdated = 0
+$CountError = 0
+
+# Initiate exchange connection
+Connect-ExchangeOnline -UserPrincipalName $AdminAccount -ShowProgress $true
+
+# Do you realy want to change permissions ?
+if ((DialogAsk "$ScriptName" "Do you want to continue and change the permission of the calendars according to your current configuration?") -eq $false) {
+    Stop-Transcript
+    Exit
+}
+
+# Retrieving users mailbox
+$Users = Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails UserMailbox | Where-Object {$_.Alias -notin $IgnoreAlias}
+Write-Host ("We found " + $Users.count + " users`n") -BackgroundColor White -ForegroundColor Black
+
+# Processing users mailbox list
+foreach ($User in $Users) {
+    Write-Host $user.Name -BackgroundColor DarkBlue
+    try {
+        $Calandars = Get-MailboxFolderStatistics $User.Identity -FolderScope Calendar | Where-Object {$_.Name -in $CalandarFolders}
+        # Process user calandars
+        foreach ($Calandar in $Calandars) {
+            $CurrCalId = $User.Identity.ToString() + ":\" + $Calandar.Name.ToString()
+            $CurrCalPerm = Get-MailboxFolderPermission -Identity $CurrCalId -User Default
+
+            
+        }
+    }
+    catch {
+        Write-Host "[ERROR] An unexpected error occured." -ForegroundColor DarkRed
+        Write-Host "--> $_" -ForegroundColor DarkRed
+        $CountError++
+    }
+    Write-Host
+}
+
+# Showing resultats
+DialogSay "$ScriptName" "The update was performed successfuly.`n`n$CountOK account(s) was already correctly configured.`n$CountUpdated account(s) were updated.`n$CountError error(s) occurred."
+
+# Stop logging
+Stop-Transcript
\ No newline at end of file
diff --git a/run.ps1 b/run.ps1
deleted file mode 100644
index 08fdfa3..0000000
--- a/run.ps1
+++ /dev/null
@@ -1,26 +0,0 @@
-<##
- # EXCAL-ARIGHTS - runable script (entrypoint)
- # 
- # @version     1.0.0
- # @since       08-25-2022
- # 
- # @author      Jérémi Nihart <contact@endmove.eu>
- # @copyright   © 2022 EndMove, All rights reserved.
- # 
- # @link        https://git.endmove.eu/EndMove/excal-arights
- #>
-
-# Setup script
-$root = (Split-Path $MyInvocation.MyCommand.Path -Parent)
-. $root\configs.ps1
-Import-Module ExchangeOnlineManagement
-
-# Start logging
-Start-Transcript -Path $root\$logFile -Append
-
-# Initiate exchange connection
-Connect-ExchangeOnline -UserPrincipalName $adminAccount -ShowProgress $true
-
-
-# Stop logging
-Stop-Transcript
\ No newline at end of file
diff --git a/utils/dev-note.txt b/utils/dev-note.txt
new file mode 100644
index 0000000..988164e
--- /dev/null
+++ b/utils/dev-note.txt
@@ -0,0 +1,20 @@
+Get-ExecutionPolicy
+
+Set-ExecutionPolicy Unrestricted
+Set-ExecutionPolicy Restricted
+
+Install powershell 7 from powershell 5 : 
+iex "& { $(irm https://aka.ms/install-powershell.ps1) } -UseMSI"
+
+
+foreach ($u in $users)
+{
+Write-Host $u.Name -ForegroundColor Green
+$cal = Get-MailboxFolderStatistics $u.Identity -FolderScope Calendar | Where-Object {$_.Name -in @("Agenda", "Calendar", "Calendrier", "Kalender")}
+
+foreach ($c in $cal)
+{
+Write-Output $c.Name
+}
+
+}
\ No newline at end of file
diff --git a/utils/functions.ps1 b/utils/functions.ps1
new file mode 100644
index 0000000..d2f93db
--- /dev/null
+++ b/utils/functions.ps1
@@ -0,0 +1,30 @@
+<##
+ # EXCAL-ARIGHTS - utilities function
+ # 
+ # @version     1.0.0
+ # @since       08-25-2022
+ # 
+ # @author      Jérémi Nihart <contact@endmove.eu>
+ # @copyright   © 2022 EndMove, All rights reserved.
+ # 
+ # @link        https://git.endmove.eu/EndMove/excal-arights
+ #>
+
+# Show a question dialog (yes/no)
+Function DialogAsk {
+    param (
+        [string]$Title,
+        [string]$Message
+    )
+    $MsgBoxInput = [System.Windows.MessageBox]::Show($Message, $Title, 'YesNo', 'Question')
+    if ($MsgBoxInput -eq 'Yes') {Return $true} else {Return $false}
+}
+
+# Show an information dialog
+Function DialogSay {
+    param (
+        [string]$Title,
+        [string]$Message
+    )
+    [System.Windows.MessageBox]::Show($Message, $Title, 'OK', 'Information')
+}
\ No newline at end of file