Upon arrival, if necessary, you can communicate with the room attendant privately, indicating that the invited guests are more important, but if the hotel is relatively high-end, the waiter should have nothing to say.
Then order, which depends on the level of the person you invite. Pay attention to the collocation of hot and cold meat. If it is winter, it is best to light a pot and heat it continuously, but it is best not to exceed two. Too much will make private rooms look like bathrooms, and fuel burning will make the air worse. If it is summer, you can order a soup according to your favorite taste. If there are female guests, consider ordering some beets.
Before ordering, you should explain whether there are any taboos. For example, some people don't eat parsley or onions, or suffer from high blood pressure and diabetes to avoid unhappiness and accidents.
Then the wine. After ordering wine, the waiter had better not open it all, so if there is any left after dinner, it will not be wasted.
How the host and guest should sit when eating, table manners are not much to say, and can be found online.
If the restaurant doesn't give away a fruit bowl after dinner, order a medium-sized one, preferably a medium-sized one, which is a great waste, because you can't eat much when you are full, and it doesn't look good when you are small.
Then pay the bill. If you want the guests to know how much you spent, ask the waiter to pay the bill in the private room. If you don't want to go, go to the bar yourself.
Finally walked out of the hotel. But don't drive if you drink.