OK I gave you the tutorial to make and save octagon shapes in My Memories Suite so that you can use again & again but there is another option.  Did you know you can open a polygon shape, then click the edit button and add sides!  If you don’t see a future need but you want an octagon for a page you’re currently working on, you can make one this way.  You can use it on your current project but you can’t “save” it for future projects.  Here’s a snapshot of the screen.  If you open the polygon shape then choose the edit button, shown on the lower right of this snapshot, a little slider comes up & you can change the number of sides.  Thanks to Marshal Dillon (Arlene) for pointing this out to me. You rock!