You can quickly burn multiple copies of a DVD in
DVD Author Plus by creating an ISO image. The ISO image is an identical copy of your DVD. Creating an image allows you to burn multiple DVDs without having to repeatedly read the original disc or content.
To create an ISO image, click
File >> Make Image. Make sure that you have inserted a disk in the DVD drive. Choose a drive from the
Copy image drop down. Click the
Browse button to choose the destination folder to save the ISO image, then click the
Make Image button.
To create copies from an ISO image, click
File >> Burn Image. Click the
Browse button to select the image file and choose a drive from the drop down. Click the
Burn button to copy the image file.
For more details see this article on Creating and burning ISO images:
https://www.deskshare.com/resources/articles/create-burn-iso-image.aspx