The Chanel Tailor is an after service repair/alteration shop. The Toronto Bloor St location has one.
https://www.chanel.com/ca-en/fashion/services/chanel-et-moi/
The brand directory page seems to have a few other shops not on your map
Acne Studios 3142
alo
Birks 3107
Mophead
Petit Pont
Sisley Paris
Veronica Beard 3310
Weekend Max Mara
https://www.oakridgepark.com/en-ca/visiting/brand-directory