HTC one User Manual page 141

141 Other apps
Managing tasks
1. Go to the list that contains the task.
2. In the list of tasks, you can:
§ Tap the check box next to the task to mark a task complete.
§ Press and hold a task to delete, postpone, or move it to another list.
§ Tap to view completed tasks, sort them, and more.
Managing task lists
1. In the Tasks app, tap
2. From here, you can:
§ Tap a list to show all tasks under that list.
§ Tap and choose an account to create a list.
You can't create lists for Microsoft Exchange ActiveSync accounts.
§ Tap to rename or delete a list.
Some lists can't be deleted.
> Manage lists.