notice using the graph in not mandatory you can put your own nodes for blocking etcc. but I suggest to put all animations in a relevant Data Assets,
You need to adapt this logic for each skeleton type that you want to Apply an overlay pose
You use this graph to add pose esthetic overlay or active stance overlay such as blocking shooting etc
Setting up new pose overlay for the different skeletons requires knowledge at least intermidiate experience of blueprint system, but I can show you step-by-step how to do it trough discord.