Album DS works as a toolbar for Adobe Photoshop CS or higher. It is an independent application and not a plugin in the exact meaning of the term but it uses Photoshop's area as his own one.

Therefore Album DS commands Photoshop in a fast way so that most of the works that usually take a bunch of steps if manually made only need a double click in the main Album DS window.
For sample: if you want to place a picture into a sheet you would need to open the file, copy the layer from the picture file, paste it in the target document ( the sheet), resize the picture layer and crop it for your needs.  Using Album DS you only need to select the target shape layer in the document and double click at the picture in Album DS, but ... there is more, Album DS will automatically rename the picture layer allowing for a direct link with the file, will rotate the picture if needed, will place it centered or at the top left corner of the shape ( selectionable) and will NOT crop the image because it's not needed as the shape layer makes this function, also will mark the picture as used for pictures tracking.