If you want to re-use your weekly menus, you should create one menu for the whole week (instead of one or several menus per day) that contains all your meals for the week.
To do that, select a day in the week (for example Sunday), and add all your recipes for the week. You can separate the recipes by headings with the days of the week.
To save time, create in the menu library a menu template that contains only the name of the weeks and use it as base when you create a weekly meal plan, so that you only need to drag and drop your recipes below the chosen day of the week.
To reuse your weekly menus, give them a recognizable name and save them to the menu library by using the "lib" button below the menu table. You can also create them directly in the menu library tab. Then add them to your meal plan by selecting a day in the calendar and clicking on the "lib" button of the menu table.