In this example, I use the edges of my honeycomb and a spacer I made on top. On my steel plate with holes I use small bolts to make a reference, both “systems” work the same way, there must be something reproducible on the machine bed you can use as a stop for your template.
The numbers are X Y references from 00:00 and respectively my K40 and the new machine, I also have them in a small help file which is used when centering the motif itself.
(the outer dimension of the slate plate is cut out of the template, the plates are just put in the hole)