To paint smooth skin point weights
).
-click
on a joint and then use the up and down arrow keys on the keyboard
to navigate your character's joint hierarchy.
By Hierarchy lists joints in the same order as the Outliner. The top of the list shows the root joint of the hierarchy, while each child joint is listed below its parent. This order is useful if you are painting a single a region of the skin—The joints you need to select from the list while painting are typically next to one another.