diff --git a/Active Directory/README.md b/Active Directory/README.md
index 953bbca..aa2ba39 100644
--- a/Active Directory/README.md	
+++ b/Active Directory/README.md	
@@ -105,8 +105,13 @@ Add-Computer -Domain "podxx.spielwiese.intern" -Restart -Force
 ----->Interaktive Anmeldung
 ````
 
+<details>
+
+<summary>Bild</summary>
+
 ![GUI-Config](IMG/NO_LOGON_HISTORY.PNG)
 
+</details>
 </details>
 </details>
 
@@ -127,7 +132,41 @@ Add-Computer -Domain "podxx.spielwiese.intern" -Restart -Force
 -----> Password Settings Container
 ````
 
+<details>
+
+<summary>Bild</summary>
+
 ![GUI-Config](IMG/PSO.PNG)
 
+</details>
+</details>
+</details>
+
+## Zertifikate & PKI
+
+<details open>
+
+<summary>GUI</summary>
+
+#### Externe Root CA
+<details>
+
+````ruby
+-> Group Policy Management Editor
+--> Computer Configuration
+---> Policies
+----> Windows Settings
+-----> Sicherheitseinstellungen
+------> Public Key Policies
+-------> Trusted Root CA
+````
+
+<details>
+
+<summary>Bild</summary>
+
+![GUI-Config](IMG/PSO.PNG)
+
+</details>
 </details>
 </details>
\ No newline at end of file