Selections
Selects all the bones that are constrained to a temporary rig control or the controls of the temporary rig.
Relative Ctrls
Only the controls related to the current selected constrained original bones will be selected. and vice versa for constrained bones. Use All to select all the Controls or All constrained bones.
Relative Constrained
Only the original bones related to the current selected ctrl bones will be selected.
All Ctrls
Selects all the Temp Ctrls.
All Constrained
Select all the original bones that are constrained to a temp ctrl.