How to use smart folders in Spyder.
Click the + button in the lower left corner of the main document window:
The smart folder predicate editor window will display.
Click the button to insert new criteria.
Holding the Option key and clicking will insert a new compound predicate.
Click OK to create the smart folder.
Right-click (or hold the Control key and Left-Click) on a smart folder and choose Edit Smart Folder…:
The smart folder predicate editor window will display.
Click OK to commit the smart folder changes.