Note: For a general primer on installing and using plugins, review Epic’s Unreal Engine 4 plugin system documentation.
Download the SDK Plugin
The latest stable SDK release can be found here.
Import the SDK Plugin
Install the plugin by copying the MixCast folder into Plugins at the root of your UE4 project (you may have to create this directory).
Add the MixCast Actor to your Scene
Find the class with the name MixCast SDK Actor in the Modes > Place panel in the All Classes list (the name may vary slightly in the UI depending on Unreal version) and add one of these to each of your available scenes. This handles initializing and managing all MixCast functionality in the SDK.