Hey BHLEE,
you are right, the diagrams Onefinity provides are always incomplete. And by the way, exclusively in imperial units 
However you should be able to subtract a few numbers to get the locations with the links I collected in this post.
By the way, when mounting the Onefinity CNC to a table top, I always suggest not to use the wood screws that come with it, but bolts instead, or sleeves (e.g. brass) with bolts in it. Their diameter would need to be exactly 8 mm:
Thank Bill @Machinist for the diagram!