@thedark5776 Licensing is out of scope in regards to FOG. But you will need to have 1 license for every target computer you deploy an image to. This is not a FOG requirement (because its open source) but your operating system you send to the target computer.
You did not mention the operating system you deploy to the target computer, but if you use MS Windows then you will need an enterprise activation license. The windows OEM license does not support imaging cloning. This is a microsoft EULA issue.