Having the involvement of support of your higher CofC should (hopefully) sort this out for you before you need to engage the Grievance process and/or consider a formal harassment complaint. But, in the event it doesn't, a few points and ref's that may help.
1. Assisting Officers (AO) are related to Summary Proceeding. (QR & O, Vol 2, Chap 108, Art 108.03 - Definitions and Art 108.14).
2. Assisting Members (AM) are related to the CF Grievance Process. (DGCFGA DIN and InterNet website)
3. Assistants are related to the CF Harassment Prevention & Resolution system. (A-PM-007-000/FP-001, CF Harassment Prevention & Resolution Guidelines, Part 3, Art 3.5 Assistants).
In the event the current COA doesn't resolve this for you and you go 'formal':
- Along with the DAOD on Harassment, the CA also uses LFCO 11-86 Workplace Conflict Prevention and Resolution along with the National directives and guidance. If you engage a WRA/HA, this LFCO is something you should also review, as it is does a good job on amplifying the DAOD, Guidelines, etc. It also provides the CA-specific processes.
- If you do proceed with a formal complaint, I recommend your Assistant be WRA/HA trained (WRA/HA take the same trg). They will be more familiar with the harassment process/system/practices and likely know where/how to access to your Formation level SOs/network, etc.
- If you do proceed with a formal grievance, you have the right to an Assisting Member. However, remember that you are not limited to assistance just from that AM. SMEs are invaluable and many are DND employees who are former serving mbrs with tons of knowledge. Its easy to develop tunnel vision, they can help with 'seeing the bigger picture'.
- With either the grievance or harassment systems/processes, ADR is usually explored as a first step. DAOD 5046-0 covers ADR, additionally there is a DIN ADR site, under the CMP org. I think its worth reviewing and considering, as an ADR solution likely would involve FAR less time and 'drama' than either a formal grievance and/or harassment complaint. You have lots on to go now it seems. Early resolution is possible even after engaging the formal processes; processes which can be long, drawn out and involve significant investments in your time, emotions, etc.
Really hope the current COA sorts this out, but if it doesn't and you need to proceed formally, hopefully those points and refs will help get you down the road with less effort & time.