Someone may know more, but I know that some reserve units in Winnipeg are
The Royal Winniped Rifles (infantry)
The Cameron Highlanders (infantry)
The Fort Garry Horse (armoured recce)
There are also the requisite 17 Field Ambulance Unit and 17 Service Battalion.
You should tell your friend to contact or visit the local recruiting centre. There they should have more detailed information on the local units.
-edit, these are all the listed 38 brigade units for Manitoba, but there are also units of the communications reserve which I am unsure about...