diff --git a/.github/workflows/django.yml b/.github/workflows/django.yml
index 8b103a8..ad737c9 100644
--- a/.github/workflows/django.yml
+++ b/.github/workflows/django.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [3.11.4]
+        python-version: [3.11]
 
     steps:
     - uses: actions/checkout@v3
diff --git a/Installation.md b/Installation.md
index 054b207..3b63363 100644
--- a/Installation.md
+++ b/Installation.md
@@ -31,7 +31,7 @@ or run `setup.ps1` (For Windows User)
 2. Run these commands to clone this repository and enter the directory.
 ```bash
 git clone https://github.com/Sosokker/ku-polls
-cd ku
+cd ku-polls
 ```
 
 3. (Optional: You can use venv instead)Install virtualenv via pip
@@ -41,20 +41,20 @@ python -m pip install --user virtualenv
 ```
 4. Create virtual environment with `venv` or `virtualenv`.
 ```bash
-python -m virtualenv .venv
+python -m virtualenv venv
 or
-python -m venv .venv
+python -m venv venv
 ```
 5. Use `virtual environment`
 
 - Windows
 ```bash
-.venv\Scripts\activate
+.\venv\Scripts\activate
 ```
 
 - Linux or MacOS
 ```bash
-source .venv/bin/activate
+source venv/bin/activate
 ```
 6. Install require module.
 ```
@@ -65,6 +65,10 @@ pip install -r requirements.txt
 **You can look at `sample.env` for more information and others environment variables to set.**
 ```bash
 SECRET_KEY=your_secret_key
+DEBUG = False
+ALLOWED_HOSTS = *.ku.th, localhost, 127.0.0.1, ::1
+TIME_ZONE = Asia/Bangkok
+EMAIL_HOST_PASSWORD = yourpassword
 ```
 
 You can generate your own `your_secret_key` by this command
diff --git a/sample.env b/sample.env
index c5af6b1..4c2f812 100644
--- a/sample.env
+++ b/sample.env
@@ -7,4 +7,8 @@ DEBUG = False
 # You can use wildcard chars (*) and IP addresses. Use * for any host.
 ALLOWED_HOSTS = *.ku.th, localhost, 127.0.0.1, ::1
 # Your timezone
-TIME_ZONE = Asia/Bangkok
\ No newline at end of file
+TIME_ZONE = Asia/Bangkok
+# Password to use for the SMTP server defined in EMAIL_HOST. This setting is used in conjunction 
+# with EMAIL_HOST_USER when authenticating to the SMTP server. 
+# If either of these settings is empty, Django won’t attempt authentication.
+EMAIL_HOST_PASSWORD=somepassword
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 7b871ff..c9bb97c 100644
--- a/setup.py
+++ b/setup.py
@@ -20,13 +20,20 @@ def check_python_command():
 
     return None
 
+def install_virtualenv(python_commands):
+    # Set check=True to throw an error if the return code is non-zero (which is an indication of some error happening).
+    try:
+        subprocess.run([python_commands, "-m", "pip", "install", "--user", "virtualenv"], check=True)
+    except:
+        print("+++Error Occur when try to install Virtualenv+++")
+
 def create_virtual_environment(env_name, python_command):
-    subprocess.run([python_command, "-m", "venv", env_name], check=True)
+    subprocess.run([python_command, "-m", "virtualenv", env_name], check=True)
 
 def customize_virtual_environment():
     env_name = input("Enter a custom virtual environment name (or press Enter for the default): ").strip()
     if not env_name:
-        env_name = ".venv"
+        env_name = "venv"
     return env_name
 
 def setup_environment_variables(python_command_in_venv):
@@ -105,19 +112,21 @@ def main():
         setup_venv = input("Do you want to set up a virtual environment? (yes/no): ").lower()
         if setup_venv == "yes":
             print("==========================Default Mode==========================")
-            if not os.path.exists(".venv"):
-                print("Creating a new virtual environment...")
-                subprocess.run([python_command, "-m", "venv", ".venv"])
+            print("==========================Install Virtualenv==========================")
+            install_virtualenv(python_command)
+            if not os.path.exists("venv"):
+                print("==========================Creating a new virtual environment...==========================")
+                subprocess.run([python_command, "-m", "virtualenv", "venv"])
             else:
                 print("==========================Using an existing virtual environment.==========================")
 
             if is_posix:
-                activate_command = os.path.join(".venv", "bin", "activate")
+                activate_command = os.path.join("venv", "bin", "activate")
             elif is_windows:
-                activate_command = os.path.join(".venv", "Scripts", "activate")
+                activate_command = os.path.join("venv", "Scripts", "activate")
             subprocess.run([activate_command], shell=True)
 
-            python_command = os.path.join(".venv", "bin", "python") if is_posix else os.path.join(".venv", "Scripts", "python")
+            python_command = os.path.join("venv", "bin", "python") if is_posix else os.path.join("venv", "Scripts", "python")
         else:
             print("Not setting up a virtual environment. Using the global Python interpreter.")
 
@@ -149,6 +158,8 @@ def main():
             print("==========================Custom Mode==========================")
             python_commands = check_python_command()
             env_name = customize_virtual_environment()
+            print("==========================Install Virtualenv==========================")
+            install_virtualenv(python_commands)
             create_virtual_environment(env_name, python_commands)
             print(f"Finishing Create Virtual environment {env_name}")
             python_command_in_venv = os.path.join(env_name, "bin", "python") if is_posix else os.path.join(env_name, "Scripts", "python")