Allright Rig is a plugin for automatic creation of character rigs and working with character animation in Unreal Engine 4. The main goal is to create a possibility of creation and editing character animation, which will help to make games, previsualization, cinematics and animation movies in Unreal Engine 4.
This is an early access for those users who need the system to continue working on their projects. I still have some work to do on documentation, optimization and business setup. So in order to not be disappointed, that you do not understand something, I would rather suggest you to wait for the marketplace release, which I believe will happen before the June 2018, but it depends on many things.
You can also try a free beta version. Year ago I applied to the Unreal Dev Grants and promissed to make the system free. So I will leave the ability to use free version. But in order to continue the development of the system I need to have an income. I hope everybody understand this.
Feel free to email at email@example.com or add me on skype: aleks_allright.