Bydefault the creator of a file or folder also becomes the owner. However as an administrator you can change this so that the user is not the owner. Owners have high priv’s as standard.
Once the user is not an owner you can set the permissions as you normally would.
This may all be moot though depending on what inherited (implicit) permissions apply to files/folders and what explicit (applied in the file/folder dacl) exist.
If you go into the scal you will find more fine grain persmissions you can set.