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  1. Download or clone the UMI plugin to your project’s Plugins folder: 
    YourProject/
└── Plugins/
    └── UMI/
        ├── Source/
        ├── Content/
        └── UMI.uplugin
  2. Regenerate project files:
    • Right-click your .uproject file
    • Select “Generate Visual Studio project files”
  3. Open your project in Unreal Engine
  4. Enable the plugin:
    • Go to Edit > Plugins
    • Search for “Ultimate Multiplayer Inventory” or “UMI”
    • Check the “Enabled” checkbox
    • Restart the editor when prompted
  5. Verify installation:
    • Open the Content Browser
    • Enable “Show Plugin Content” in the View Options
    • Look for the “UMI Content” folder

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Method 2: Engine Plugin Installation

For engine-wide availability:
  1. Copy the UMI plugin to your Engine’s Plugins folder: 
    UnrealEngine/Engine/Plugins/UMI/
  2. Restart the engine and enable the plugin in your project

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Building from Source

If you need to modify the C++ code:
  1. Ensure you have Visual Studio 2019 or 2022 installed with C++ development tools
  2. Open your project’s .sln file in Visual Studio
  3. Build the project in Development Editor configuration
  4. Launch the editor from Visual Studio or the .uproject file