Welcome in the forum!
Target should be not to pick up stray noise from power line via unused pins of the PSoC. Pins not in use are high impendance and will easily pick up unwanted voltages. Connecting those pins to GND would help, but will reduce the flexibility of the pcb. Definig these pins as resistive pull down inputs will increase the power losses. So it is up to you what to do.
I might have asked question incorrectly. If you look at the image below from the mentioned post
As you can see MISO and reset are connected to 'dummy ports' on the designer page. So what I'm trying to do is to avoid having connect pins that I will not be using.
I hope this clarifies what I'm after here
The two components connected to miso and reset are "logical zero" components and not any external pins. So you are on the right side of the street.
That worked liek a charm! Thanks a lot!