You can customize which pins are displayed in the Assigned and Unassigned list boxes.
To customize the list boxes:
From the View menu, choose Configure List Boxes.
Filter Assigned and Unassigned Lists - Entering a specific pin name in this field filters out all other pins in the Assigned and Unassigned list boxes. Use the * wildcard to filter for groups.
Show locked and unlocked pins - Select to display all locked and unlocked pins in the Assigned list box
Show only locked pins - Select to filter out all unlocked pins from the Assigned list box
Show only unlocked pins - Select to filter out all locked pins from the Assigned list box
Click Apply to see changes. When done, click OK.
Configure List Boxes Dialog Box