Thanks for sharing. I actually didn’t have to be in Pose Mode or to select the specific eye bones during parenting. I just stayed in Object Mode. It does highlight the whole rig when I select it, but the parenting seems to work okay as long as the names are correct. The only trouble I had really was in mismatching names of “eye.L” vs “eyes.L”. Similar problem with the Symmetrize modifier, didn’t realize I had to name the bone “eyes.L” first for it to know what to do.
