I think my colleagues partly answered that in saying that every agency will have different processes, and your previous witnesses explained that as well. But they permit employees to come forward, and it's not like one-stop shopping. It may be to the extent that they come forward with something, but where that goes into the different streams or avenues is sometimes dictated by the law. It's sometimes dictated by the complainer's wishes.
Evidence of meeting #71 for Government Operations and Estimates in the 42nd Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was employees.
A recording is available from Parliament.