First, start the Scenes Editor application.  In the upper right corner is a small square button containing a white question mark.  Click on it to open the following context menu.  Select Tools Applications, then Configurator.

Once the DecoTech Pro Configurator application window is opened, click the Advanced Options button.

Once in the Advanced options window, on your keyboard, hold down the left control and shift keys while clicking the Modify button to unlock the text box on the left.

Enter your limited-time remote license number and click the Accept button.  Back in the first window, click the Save and Quit button.

If you have correctly entered your number and it is still valid, you should see in the title bar of your Scenes Editor application, the suffix (In evaluation mode) be replaced by an expiration date.  Of course, an Internet connection is required at all times to validate this number.