1. Double click on the RenewJMP.jsl file to get this:

   

2. Now click on the Run Script icon to run the script, and you'll see this:

   

3. Click Open License and get a file browser:

   

4. Select the appropriate license file, and click on Open and get this dialog:

   

5. You may leave the fields blank, and click OK to finish:

   

All done!