There's plenty of 'Select top/bottom facing' utilites...now a DCP to select side facing verts...
why ? dunno...sidejob ? sideburns ? that's beside the point, just do it sideways...
Extract preset to:
C:\Users\xxx\AppData\Local\Autodesk\3dsMax\2017 - 64bit\ENU\en-US\plugcfg\DataChannelPresets
Then in your DCM, load it as a Preset.