Transmit information
Screen capture
A screen capture program in some cases allows to place arrows, text and highlight zones to mark the differences to be made on a website or design.
Video creation
There are other programs that allow to record a video with what you want and to write the document at the same time.
Screen sharing
Video conferencing programs allow to share the screen but remote control programs allow 2 people to move on the same screen and application.
Sometimes they are a faster way to understand small changes that are intended.
