You can place captions under the image. To do this, you select the image from the drop down. Then click on the Preview Image button. GraphicConverter will open the image, and a dialogue window will appear. Type your caption into his window and click on the OK button. The image will close, and you will be returned to Freeway with the caption placed in the Action's image database. You can also type your caption into the text box below the button.
You need to enter the name of a Freeway style for the caption to be displayed in. This style must be present on the page somewhere (the pasteboard will do very well for this).
When Freeway publishes the page, the captions will appear underneath the image. This will cause the containing table to grow vertically,, so ensure that your page's layout can accommodate this is necessary.