In the last activity posted on this archive, The Three Pigs story, it included pages where the user had to drag objects to a set location on screen before the story would continue. This is a straight forward effect that is achieved as follows;
Choose the 'Activity' template and begin to build your story / activity. When you want to create draggable objects with a target location, click on the dice icon "games" on the right of the screen.
Click and drag the '_drag' icon onto the page (it is the first option in the list shown below), and in it's edit window create the image you want. If you want to have more than one object to drag you can either drag more of the '_drag' icons onto the page, or just copy and paste the first one (if all draggable objects are to look the same - like in the three pigs story)
At the moment there is nowhere to drag these objects to, so we need to add the 'drag target' icon. Click and drag the icon onto the page (it is the third option in the image above), and then create the image for it (in the three pigs example it was the pig). Scale it to the size you want, and place it on screen.
Now when you test the activity, you will notice that there is no next page arrow. The arrow will not appear until you have moved all the draggable objects onto the drag target.