The task page is meant to be a high-level overview of the actions that need to be taken to manage your loyalty program. You set correlated tasks when setting up custom actions and rewards.

The task page is where you can see if you have any pending community approvals and all actions that need to be taken as part of the program. As you complete tasks (IE make a donation, add a submission etc.) mark the task as complete and it will be moved to the completed tasks section.