First, ensure quick entry is disabled. To do this, click "Quick Entry Disable" on the Floorboard.
Click on your name on the Floorboard.
After clicking on your name (or the name of the salesperson whose pending tasks you want to clear) Click on the "P" icon under the Floorboard.
You will now have visibility to your pending tasks. Note: Pending tasks must be cleared for you to take yourself off the Floorboard.