Persistence
Generate Identifiers
First you click the "Load Persistent Objects" button so RPG Builder grabs them all at once, you can then press "Generate Unique Identifiers" to automatically assign the "Saver Identifier" script to the objects and have it generate a unique ID for each of the objects.
Dynamic Object List
In this list you can add any prefab that has "Dynamic" enabled on the "Saver Identifier"