you can build the formtabs and columns for a MIGX - TV with the MIGX - configurator - CMP
Then you would add the name of your configuration into that field and let the formtabs and columns - fields alone.
There is a lot of other stuff within the MIGX - configurator - CMP, which is mostly related to MIGXdb (TVs or CMPs)
there are some tutorials at the MODX - docs and there is this:
I would love to make it more complete, but never get time enough.