I'm selecting parts of the body to include in a pose. I only want certain main parts like the hand and all its fingers and the thigh and dependent parts. Do I have to click on each little box and each sub-box in the hierarchy, or is there some shortcut key-stroke/mouse-stroke combination to select members of a group (like all the fingers of a hand)?

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks