The selection of which module runs when you select a given resolution in guvcview is configured in a file, JEVOIS:/config/videomappings.cfg
As far as guvcview is concerned, you only select a given video resolution, which is the output resolution of JeVois. Using the mappings file, JeVois then decides which camera sensor resolution to use and which machine vision module to run. So, to trigger mapping 25 that you mention, you just need to select YUYV 640x300 @ 60fps in guvcview (the OUT: part).
Please see here for more details:
and here for the policy about how we avoid ambiguous mappings (which would have same output resolution and framerate):