Microsoft Planner is a powerful tool already built into your Office 365 that can help you manage simple projects through task management.
Check out our Tips for Using Microsoft Planner.
Now that you can have multiple Planners for multiple projects and yet have an aggregate view of all your tasks, Microsoft added in a priority rating feature on your tasks! The crowd rejoices!
There are also many other useful parameters you can set:
Above you can see all of the settings you can update in a Planner task.
The new Priority dropdown contains:
When you set a Priority level, the task will appear with the associated icon:
You can also filter all your tasks by Priority now within Planner. So, if you wanted to look at all your Urgent-labeled tasks, you could!