disabling the rendering of a certain part of the mesh attached to the bone in a rig

Questions & Answers
1

for example how can i disable the rendering of the head and keep the rest of the body rendered?
mesh is totally rigged. This feature a similar feature like in this from unreal engine attached in the link. it disables the bone and according mesh attached to it. Here For Example

2

One technique I commonly use to “not render” a body part is to scale that one bone down very low. In this case, likely you would scale the head and neck bones to something like .001, and they will “disappear”.