Bkender hair rigging issue

[RoxieAmadeus]

I parent to empty groups but cannot select individual bones to parent toI can only select the whole rig, so upset I can't get this right.I am working with the Tonic Dev Kit. I am using Blender 2.8 and I have Avastar 2. The hair is a sample hair from VRoid. Also, since the Tonic Dev Kit has no head and if I'm using the Avastar skeleton, I do not have an mHead bone for some reason.

 

I am trying to follow this tutorial: https://www.youtube.com/watch?v=3Elm-XrO4Xs&t=339s by The Mighty Gingko

 

It says to make sure a masking button is off, but I can'r find it in 2.8 anywhere. I'm wondering if I should also download 2.79 so I can follow tutorials. Does anyone have opinions in that?

 

Thanks,

 

Roxie