Normally, you will have to pick the different origins with each "batch" or ordinates that you do. You can also click on a dim and drag its origin with the node. In ACAD Mechanical, you can fake the PowerOrdinate routine by selecting a line (instead of a block) and create just one ord dim. Then use PowerCopy and select the first dim and it will then use that one's origin for any other that you create. I hope one of these meets your needs.
"Whether you think that you can, or that you can't, you are usually right "
.. Henry Ford