If they have access to your file, then yes, they can. But if they don't have that, they can't. To give them access to information, you will have to fill required form, sign it, get it signed from them and upload it thru Webform. It'll take 10 days to get that added to the file. After that, IRCC can provide selective information to them. The other way is to make them the representative, same process, that can give then full access to information.