Using Actions
Think of actions like the "Object Mode" of animation. They are a combination of keyframes built into a block that can be arranged or ordered with other actions.We can use the NonLinear Animation panel to join and arrange the "Animation Objects" and even roughly blend between them.
EXAMPLES of joined Mixamo Characters/Actions in Blender
To work with actions, start by setting up your Blender viewport in the Animation Preset View.
***Use the NONLINEAR ANIMATION timeline to arrange actions on tracts.
***The AutoBlend check box in the right-hand properties panel ('N') can be used to seam together the actions.
***The AutoBlend check box in the right-hand properties panel ('N') can be used to seam together the actions.
Here's a demonstration showing how to put all of this together:
...and the end result: