The location of the mounting holes is detailed in the drawing seen here: Replacing the Nomad bed - #21 by robgrz
The “true” working area of the nomad extends a little past the boundaries of the 8x8" table, I would advise that you never have the spindle centerline go more than 1/8" beyond those bounds. The table can be surfaced in its entirety by a 1/4" endmill, but much beyond that and you risk crashing into a hard limit or into the tool probe.