There are a few things you need to know in order to load actions in Photoshop. First, the action must be defined in a file called “actions.psd”. This file is located in the " Actions" folder of your Photoshop installation. Second, you must create an event object for the action. This object will contain information about the action and its associated parameters. Finally, you must add the action to your document by dragging it into the document from the Actions folder.