Microsoft To Do - Using Categories 

Learn how to create categories easily to organise your tasks and e-mails in Microsoft To-Do and Outlook.
How To Create A Category
1. Visit office.com
2. Go to Outlook Online
3. Click on Settings
4. Search for the setting - Categories
5. Create a new category and give it a unique colour
Using Categories in Microsoft To-Do
1. Select or create a task
2. Click Pick a Category
3. Use the Group By then Category option