Unable to deselect boundary surfaces after pressing "Select all" in wall calculator to find drag

[Arjunint10380]

I'm trying to deselect my boundary as to not have it interfere with my Drag calculations. After I press select all I am unable to deselect the boundaries. I am unsure how else to perform this function. Any workarounds or solutions?

[apolo_vanderberg]

There are two main methods to consider

1. Before running the model, in the setup tasks select the surfaces you want to use for drag calculations and group them. (Once those specific surfaces are selected, right-click Group and name them). After running that group would be accessible from the Wall Results dialog

2. As presented, you should be able to select a number in the Wall Result dialog and use the single X to deselect that surface leaving just the surfaces you want for computing the drag