"This will provide the public, police, and other key stakeholders with an independent assessment of the information police had, the decisions police took, the tactics used, and whether the approach taken to policing the protest as it evolved was lawful, proportionate, and appropriate," the authority said.
Complainants can expect to be contacted shortly, in line with the IPCA's standard processes, and informed of how their complaints will progress.
It is expected the work will be completed and reported on by March 31 next year.
"The authority will not make any further public statement but will from time to time report to the Secretary for Justice on the progress of the work," the statement said.