Hi,
yes, it has to be done by scripting. The easier workflow is:
1) Create the script you need using the Script generator.
2) Send it to the editor
3) Comment out the line:
device_configuration.update()
4) Add the following line, including the desired values for processes and threads:
profile = ParallelDevicePerformanceProfile(device_configuration, processes_and_threads=[(1, 1), (1, 2), (2, 1)])
Best,
Daniele