Heroes of Golarion - Mythic Occult options

[Eilserves]

Hey, before going and submitting a bug report I wanted to check and make sure I'm not just missing something. HoG added Mythic support for Occult Classes, which is something that's been sorely lacking. The most interesting feature, at least IMO, is the option for Mediums to tie their Mythic ability to the spirits they channel, which effectively changes their Mythic Path to match the channeled spirit. However, I can't seem to find how to implement this in HL, even with the source active.

Is this something not implemented and therefor bug report worthy? OR am I just being dumb and not locating an option somewhere?