If it's just a general small-scale restaurant, the decoration can be simpler. Just make the store clean. In terms of manpower, it depends on how big your store is and how business is going. At first, you can recruit fewer people and then make adjustments. If the business is getting better and better, it will naturally continue to recruit people. It's hard to say how much the cost is, because the price difference of the materials you use for decoration is also different, and the price difference of labor is also different. It's hard to say, it's best to focus on the cleanliness of the environment in small restaurants, and then adjust the others slowly after they are done.
The procedures are those stipulated by the state. When you rent a good place and start decorating, the licenses you need are probably: secondary consumption, environmental assessment, hygiene license, business license, tax registration certificate, etc. See if the place where you open a shop is formal or not. You can go to the Jiading District Administration for Industry and Commerce for consultation first, and ask them what kind of licenses they need to apply for when they open a shop with you, because the licenses required by individuals and companies are different.