I am trying to make a table like below, how is it possible to merge the common URN no. for different customers? Can you please provide me an example?
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It may be helpful!
Why not use nested card layouts to implement that?
I'm also a fan of the card layout setup for creating a custom grid. An example is posted here.
It's not really possible to merge cells in grids - my suggestion for starters would be to have a separate grid for each unique URN. You'd be able to have any form show any (reasonable) number of grids for this.