Discuss categories and explain the Quick Click category.

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Outlook allows you to categorize email messages, contacts, tasks, and calendar items so that you can identify which ones are related to each other as well as quickly identify the items by their color. You can color-categorize tasks to organize and manage different types of tasks.

Six color categories are available by default, but you also can create your own categories and select one of 25 colors to associate with them. After you create a category, you can set it as a Quick Click. The Quick Click category is the category applied by default when you tap or click an item's category column in the To-Do list pane. For example, the default Quick Click category is the red category. If you tapped or clicked a task's category column in the To-Do list pane, the red category automatically is assigned to it.