Hint 1. You can print your CAD file into TalkAndWrite before the meeting starts.
Hint 2. Since you are using the PRO version, you have unlimited time to discuss your project with your client, even if he/she has the BASIC version.
Hint 3. For large files, it will be faster if you print your CAD project using TalkAndWrite Printer, save it as TalkAndWrite background (File => Save Background) and send it to your client by file transfer or e-mail before starting the meeting.
Hint 4. It is not necessary a MousePen* to use TalkAndWrite, however with a MousePen* you will be able to handwrite easily as if you were writing with a pen