If the license is tied to a dongle, activation is not required. If experiencing problems with a hard license, please check our article HASP License Troubleshooting.
If the license is tied to a PC (soft license), a product activation key is normally sent to the license purchaser along with download links for the software installation. Once the software is installed the license can be activated using the key provided on as many machines as the key has been licensed for.
Note that in the case of multiple user server/floating licenses, activation is only required once on the server machine.
There is no need to activate for each user. Please check this article for further information on configuring server licenses.
The software activation requires a connection to the licensing server hosted by ZEISS arivis and therefore also requires an internet connection. Since not all computers are connected to the internet, alternative methods of license activation are available.