Showing elements in columns (horizontally)

Greetings,
I would like to understand if there is some way to create the table how it is shown in the screenshot below


In particular I don’t understand if I can create a table (see sheets list) that shows the elements organized in columns.
The small squares shown in the screenshot, should contain the value of the data rows while the rows should be the groups footer.
When the squares list is too long to be contained in the TableWidth, they should go automatically to new line.
I send you the template in attachments (I don’t know how to send you some sample data to use with the template).
Thank you all for the help,

fileimporter_NestingLargeImage_1.0.lst (421.9 KB)

With best regards,
Nicola.

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