You would first need to create an anim montage. You do that by right clicking on your animation and selecting “Create Anim Montage”
Open up the montage and you will be able to set the name of the slot. Call it “FullBody”
Now go to your anim blueprint > animgraph and set up the SlotNode in between the state machine that runs the idle and run animations and the Final Pose Node. Make sure to call the slot FullBody.
Now in your characters blueprint you can play animations this way.
If you would like to have it play in code, its a different set of things you have to do.