Follow the steps in this part of the wiki when you:
PMA.core is built in such a way that a straightforward email exchange process allows the customer to upgrade their own license file. No other intervention from Pathomation is needed, except for sending the customer an updated license file based on the commercial conditions.
The user must copy the request code, which can be found in the second tab and send it to Pathomation:
The vendor should save the sent license file locally on their own computer, after which it can uploaded to PMA.core and installed through the third tab:
Once the license has been successfully installed, the system will display the appropriate message.