This question asks for a Roberts Rules analogue for, specifically, courtroom proceedings. However, other non-governmental organizations often need to decide someone's fate within the organization based on evidence and witness testimony, etc. For example, a union employee may be disciplined for some action, and there are typically some kind of rules laid out for conducting the proceedings against said employee as negotiated between the union and the employer.
I am curious if there exist any Roberts Rules analogues that might be applicable to this sort of generic NGO judicial proceedings?
Note that I am not interested in, e.g., federal rules etc. but only in "generic" rules that can be adopted by arbitrary organizations.