'deactivate' button question

What is the ‘deactivate’ button used for located in Help>License?

Thank you.

Hi, that should be used if you want to start using your eM Client on a different computer and maybe use the license you’re currently using.
If you didn’t deactivate the current computer, it might not work on the computer you’d be moving to.

Is this a helpful answer?
Thank you,
Paul.

Thank you.