### 1. Setup Development Environment:

#### a-1. Oculus Development Hub (ODH):
- Download and install the [Oculus Development Hub (ODH)](https://developer.oculus.com/documentation/unity/unity-odh/).
- Connect your Meta Quest 2 to your PC using a USB-C cable.
- Use ODH to enable Developer Mode on your Quest 2.

### a-2.
- Download and install the [Meta Quest Developer Hub (MQDH)](https://developer.oculus.com/downloads/package/oculus-developer-hub-win/)
- Connect your Meta Quest 2 to your PC using a USB-C cable.
- Use MQDH to enable Developer Mode on your Quest 2.

#### b. Unity Setup:
- Install [Unity Hub](https://unity3d.com/get-unity/download) 
and then install Unity (preferably version 2019.4 or newer).
- Create a new Unity project.
- Go to `Asset Store` and download the `Oculus Integration` package.
- Import the package into your project.

#### c. Android SDK & NDK:
- Install [Android Studio](https://developer.android.com/studio).
- Open Android Studio, go to `SDK Manager`, 
and ensure you have the required SDK and NDK versions installed.

### 2. USB OTG Camera Integration:

#### a. Android Manifest Permissions:
Add the necessary permissions to the AndroidManifest.xml:
```xml
<uses-permission android:name="android.permission.USB_HOST" />
<uses-feature android:name="android.hardware.usb.host" android:required="true" />
```

#### b. Accessing USB Camera:
You can use the [UVCCamera](https://github.com/saki4510t/UVCCamera) library. 
Here's a basic way to integrate it:

1. Clone the UVCCamera repository.
2. Import the library into your Unity project.
3. Create a bridge class in Unity to interface with the library.

### 3. Display Camera Feed in VR:

#### a. Create a 3D Plane in Unity:
- In the Unity hierarchy, right-click and create a 3D Plane.
- This will be used to display the camera feed.

#### b. Display Camera Feed:
```csharp
public RawImage displayImage; // Drag your RawImage component here in the inspector

void UpdateCameraFeed(Texture cameraTexture)
{
    displayImage.texture = cameraTexture;
}
```

### 4. User Interface & Controls:

#### a. Basic UI:
- Use Unity's UI system to create buttons for connecting/disconnecting the camera.
- Use Oculus Integration's `OVRInputModule` to make the UI interactive in VR.

#### b. VR Controls:
- Use the `OVRInput` class from Oculus Integration to detect button presses and controller movements.

### 5. Testing:

- Build and run your Unity project for the Android platform.
- Wear your Quest 2 and test the app's functionality.

### 6. Deployment:

- Follow Oculus' [submission guidelines](https://developer.oculus.com/distribute/latest/concepts/publish-submission-guidelines/) to submit your app to the Oculus Store.

### 7. Considerations:

- Regularly test with different USB OTG cameras to ensure broad compatibility.
- Monitor battery usage and optimize as necessary.