OK, the Owners Corp and/or the EC can give permission for common property to be used either temporarily (a licence, for want of a better term) or permanently (requiring a special resolution by-law including an agreement on ongoing maintenance as well as possibly a payment from the user to cover costs).
How you rescind this is by going back to the original formal agreement and reversing the decision. If this was done as an exclusive use special resolution by-law, you will need the beneficiary’s permission.
If it’s just a “licence” based on an EC motion, you overturn it at an EC meeting.
If the common property is a visitor parking space, for instance, permission should probably never have been given as you are most likely in breach of your Development Authority