One way would be to go to the ‘Inventory Parts’ window and query for all parts that have the Frequency Class set as “Slow Mover”.

Of course this requires that you have run the “Perform ABC, Frequency and Lifecycle Classification” job.

The limits for what is to be classified as Slow, Medium or Fast Mover is defined per Asset Class in the basic data window “Inventory Basic Data” on the Asset Class tab.