To add an image into GN4 from Photoshop select the Folders tab, select the folder you would like the image to be placed in and press the import active document button in the taskbar of the folder tree.

This will open a window which will allow the choice of object type (img or image) and a title. When the image has been added it will close the current document and open the one that was added to GN4.

The currently open document can also be added to the currently selected Task in the Task Tab Task Grid View Pane.