How can I create multiple measurement points and monitor the pressure with a journal file?
In non-steady-state calculations, to create multiple measurement points, a journal file should be used to monitor each. Before the calculation is run, go to File > Read > Journal. In addition, you can create multiple surfaces. If you want to monitor the average temperature of each surface and the flow rate passing through each surface, you can use it in the same way with a little modification.
For more details, refer to this document.