The Overview page allows you to dig deeper in the workspace and get specific insights. It does so by offering a rich selection of filters:
My Tasks and All Tasks
Quick Filters (Assigned to Me, Created by Me and Followed by Me)
Projects
Due Date (Overdue, Due This Week and Due This Month)
Status (Completed and Deleted)
Assigned To
Created By
Followed By
Tags
Time Period
You will find these filters right next to left navigation when you click the Overview icon

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Click on Clear All Filters at the bottom of the filter panel on the left to clear all the filters.