Everyone eats on their own schedule. The Meal Times screen lets you tell Tradish when your meals usually happen, so its planning suggestions land at the right moment. As the screen puts it: "Set your usual meal times. We'll use these to suggest when to start cooking."
You can set a time for each of these:
Repeat for any of the other meals. You only need to set the ones that matter to you, and you can come back and change them any time your routine shifts.
These times feed the Plan feature. When you plan a meal, Tradish looks at the time you set and works backward through the recipe's cook time to suggest when to start cooking, so the food is ready when you want to eat. Set dinner for 6:30 and a recipe that takes an hour, and Tradish knows to nudge you around 5:30.
Because the suggestion is built on your meal times, keeping them accurate makes the Plan feature more useful.