@Scottcp_2816590 i havent printed this myself. But it appears there are 4 screw holes on the interior of the case. Those would match up with the 4 holes in the pi zero so either those are pins that poke through the holes in the pi or holes to screw the pi down. But in reality even if they are just pins with the pi setting on them and a lid on the pi it shouldnt have any trouble stay put.

@OggieDoggie_2952434 a second look they do appear to be pins. But those should be enough to hold it in place along with the lid on top