diff --git a/docs/DeveloperGuide.md b/docs/DeveloperGuide.md
index fb97e3486ff..62754a54ef0 100644
--- a/docs/DeveloperGuide.md
+++ b/docs/DeveloperGuide.md
@@ -187,7 +187,7 @@ The following activity diagram summarizes what happens when a user executes a li
 
 ![ListActivityDiagram](images/ListActivityDiagram.png)
 
-#### Design considerations:
+#### Design considerations
 
 **Aspect: How list executes:**
 
@@ -432,7 +432,7 @@ Given below is an example usage scenario and how the pin mechanism behaves at ea
 
 Step 1. The user creates an entity with a unique ID. The entity is unpinned by default and will be displayed according to the current sorting order.
 
-Step 2. The user executes `client -p 3` to pin the 3rd client in the project book. The `PinClientCommand` is executed and calls `togglePinned()`, toggling the `Pin` attribute of the 5th client from `false` to `true`. This is followed by a call to `Model#sortClientsByCurrentCategory()` and `Model#sortClientsByPin()`, which displays the sorted client list with pinned clients (now including the 4th client) at the top.
+Step 2. The user executes `client -p 3` to pin the 3rd client in the project book. The `PinClientCommand` is executed and calls `Client#togglePin()`, toggling the `Pin` attribute of the 5th client from `false` to `true`. This is followed by a call to `Model#sortClientsByCurrentCategory()` and `Model#sortClientsByPin()`, which displays the sorted client list with pinned clients (now including the 4th client) at the top.
 
 <div markdown="span" class="alert alert-info">
 :information_source: **Note:** If the current client is already pinned, `Client#togglePin()` will toggle the `Pin` attribute of the client from `true` to `false` and call the latest sort order, causing the client to be displayed in its original position.
@@ -451,17 +451,18 @@ The following activity diagram summarizes what happens when a user executes a pi
 
 ![PinActivityDiagram](images/PinActivityDiagram.png)
 
-#### Design considerations:
+#### Design considerations
 
 **Aspect: How entities can be unpinned:**
 
-* **Alternative 1 (current choice):** The `togglePinned()` method is called which sets the `Pin` attribute from `true` back to `false`. The same command used to pin is also used to unpin the entity.
+* **Alternative 1 (current choice):** The same command e.g. `PinClientCommand` used to pin the entity is also used to unpin the entity.
     * Pros: Less duplication of code and less commands for the user to remember.
     * Cons: Lesser separation of responsibilities as the same command is used for different (but similar) functionality.
 
-* **Alternative 2:** An additional unpin command is created e.g. `UnpinClientCommand`, `UnpinProjectCommand`, `UnpinIssueCommand`. Different pin commands `setPinned()`, `setUnpinned()` are used to pin and unpin the entity.
+* **Alternative 2:** An additional separate unpin command is created e.g. `UnpinClientCommand`.
     * Pros: Better separation of responsibilities as one command is used to pin and the other is used to unpin the entity. There is no overlap.
     * Cons: More duplication of code, additional command for user to remember with roughly the same functionality.
+
 --------------------------------------------------------------------------------------------------------------------
 
 ## **Documentation, logging, testing, configuration, dev-ops**
diff --git a/docs/diagrams/DefaultViewSequenceDiagram.puml b/docs/diagrams/DefaultViewSequenceDiagram.puml
index 901814a0457..11b2eb0352f 100644
--- a/docs/diagrams/DefaultViewSequenceDiagram.puml
+++ b/docs/diagrams/DefaultViewSequenceDiagram.puml
@@ -43,7 +43,7 @@ deactivate AddressBookParser
 LogicManager -> SetClientDefaultViewCommand : execute()
 activate SetClientDefaultViewCommand
 
-SetClientDefaultViewCommand --> Model : setDefaultView(CLIENTS)
+SetClientDefaultViewCommand --> Model : setDefaultView(CLIENT)
 activate Model
 
 Model --> SetClientDefaultViewCommand
diff --git a/docs/diagrams/PinSequenceDiagram.puml b/docs/diagrams/PinSequenceDiagram.puml
index 3d4215ca742..3f547914374 100644
--- a/docs/diagrams/PinSequenceDiagram.puml
+++ b/docs/diagrams/PinSequenceDiagram.puml
@@ -11,6 +11,7 @@ end box
 
 box Model MODEL_COLOR_T1
 participant ":Model" as Model MODEL_COLOR
+participant ":Client" as Client MODEL_COLOR
 end box
 
 --> LogicManager : execute("client -p 3")
@@ -43,11 +44,11 @@ deactivate AddressBookParser
 LogicManager -> PinClientCommand : execute()
 activate PinClientCommand
 
-PinClientCommand --> Model : togglePinned(3)
-activate Model
+PinClientCommand --> Client : togglePin()
+activate Client
 
-Model --> PinClientCommand
-deactivate Model
+Client --> PinClientCommand
+deactivate Client
 
 PinClientCommand --> Model : sortClientsByCurrentCategory()
 activate Model
diff --git a/docs/images/DefaultViewSequenceDiagram.png b/docs/images/DefaultViewSequenceDiagram.png
index edc84826a0e..86009061ea7 100644
Binary files a/docs/images/DefaultViewSequenceDiagram.png and b/docs/images/DefaultViewSequenceDiagram.png differ
diff --git a/docs/images/PinSequenceDiagram.png b/docs/images/PinSequenceDiagram.png
index bac92d03ef1..b5938712790 100644
Binary files a/docs/images/PinSequenceDiagram.png and b/docs/images/PinSequenceDiagram.png differ