By default the software will use all the Cores and all the RAM memory available. It is possible to choose how many Cores and how much RAM to use for processing following:
1. On the Menu bar, click Process > Options...
2. In the Processing Options pop-up, click Resources.
3. Drag the bar to select the new values for RAM [GB] and CPU Threads.
4. Click OK.
For more information about the resources in the processing options: 202557909.