For your technically challenged clients, Douglas Alder made a nicely illustrated, simply explained post about grabbing and sharing screen shots of FileMaker Go layouts on your iPad and iPhone:
Communicating with your FileMaker application developer or other users of a database system can be greatly facilitated by the use of screenshots. Grabbing a screenshot from FileMaker Go is fairly easy to accomplish, if you know the secret of capturing. Here is how to do it.
Go to the layout you are having an issue with. Locate the On/Off button for your device.
This button is on the top right of the iPad or iPhone. This is the button you use to turn your iPad on and off.
Follow the link below for the rest of the technique, and share it with your clients.