Restaurants are not allowed. Who should I talk to when cooking?

Cooking in the property is generally not allowed. This should have been put forward when signing the lease contract. Do it yourself if the contract doesn't allow it. It's no use looking for anyone.

If it is a special place, no catering is allowed. This is the same situation. You can only find another sidewalk elsewhere.

However, if you didn't say whether you can do catering when signing the contract, and then the owner or property is unwilling to do catering for you after you operate, you can leave it alone or find the police station. This is a contract dispute. The reason is on your side. Of course. If you have a business license and a catering service license, it is impossible for them not to cook for you.