You have your salad in a separate salad bowl which you place next to the dish with the entree.

I make my own dressings. My favorite:

Hazelnut oil
Champagne or white wine vinegar
Sugar
Freshly ground salt
Freshly ground black pepper

Ust the oil-to-vinegar ratio that you find most pleasing. Add a small amount of sugar (a teaspoon or less, dependig on how much you make). Add the freshly ground salt and pepper, and whisk with a fork until you get something resembling an emulsion. You have to whisk it while serving if you don't want to get all oil or all vinegar in one serving.

My second favorite:

Extra virgin (very fruity) olive oil
Red wine vinegar
Crushed garlic
Sugar
Freshly ground salt
Freshly ground pepper

You can add some fresh basil and/or rosemary to that, but I think it's great without any herbs at all.