Need data grid with sub grid capability

I want to explore capabilities of data grid, having sub grids in mendix. Eg. i want to achieve functionality as in below screenshot, I have activity grid, with sub activity as sub grid along with collapsable feature. Data grid provides only inline editing and addition of row at top/bottom. But, how to add sub grid row and have this grid and sub grid structure. Any widget that could provide this out of the box capability?
1 answers

This is not trivial to achieve with Mendix. The standard data grid definitely does not support this.

You might want to use a list view styled with css to look like a table.

The following blog should help