Is possible to create a ToDo List by simple inserting the ToDo List macro within a Confluence page.
Go to the page where you want to insert the ToDo List and edit the page
In the Confluence editor, choose Insert > Other Macros
Search for 'ToDo List Macro' and click on the item in the list
Insert the parameters of your ToDo List:
Title
Height
Width
Remove task when completed
Number of Tasks per Page
Save the macro
Save the page