Visualizing hemispheric differences- sans freesurfer

I should have mentioned that I don't have Freesurfer, have downloaded the MATLAB 2020a package, and am using a Windows machine. Am I still able to do the above? I'm having a similar issue as another thread.

I downloaded the standalone version of cat12, but Brainstorm's toolbar ribbon isn't allowing me to specify the plugin's location with "Custom Install" as the CAT12 tutorial suggests, or by automatically having the plugin installed like this tutorial outlines: https://neuroimage.usc.edu/brainstorm/Tutorials/Plugins

Screenshot 2022-06-19 202022