There is such a process, and I've sat through several such hearings where members have been raked over the coals. The complaints can come from anybody. There's no limit to who may complain and if the complaint appears to be serious, the regulator has to deal with it, and when there is a hearing, an investigation report will allege what the complaints are just as there would be with the law society. The disciplinary process is quite similar.
On May 7th, 2019. See this statement in context.