When you’re working on a Publisher document, chances are you may not have all the final images in hand. If you’re waiting on graphics, you can add a placeholder for each image to your Publisher file so you can allocate the space for the images and so everything else can be finalized in the meantime.
To do this, click Picture Frame and choose Empty Picture Frame then drag a frame into your document. Size it to the size required. Later, when the image comes in, you can add it to your placeholder by right clicking the placeholder and choose Change Picture, From File and locate the file to use.