My customer wants to place tabular data in on of my components. I can easily create a grid where the user puts in row by row and cell by cell, but that puts a lot of work on them to do it "right" Anyone have an example or hint towards letting the customer define a "header row", and then each "data row" has to match?

Shameless self promo - have a look at my package Tabulate, it might do what you need. It lets editors define the table schema, and helps with modelling the table data for developers.

ty, I will take a look