Just to elaborate on this further, subsection 11(2) of the RCMP Act states that the act does not apply to reservists except as provided for in the regulations. There currently are no regulations covering the reserve program, so potentially some regulations could be developed.
As far as dealing with complaints against reservists goes, first of all, they must comply with all RCMP operational policies applied to their assigned duties, as well as all mandatory training and those types of requirements. If a complaint is received involving a reservist, then an investigation is done. The reservist supervisor reviews the investigation report and can take whatever measures they deem fit. It could be training; it could be operational guidance, and I suppose in some circumstances it could be ceasing to use that reservist.