Child 1 overwriting child 2 in an excel workflow

I have a workflow with parent and two child records on top of each other below, and it is a xls format.
Since appsheet workflows don’t support tables in excel, I wonder how to solve this.
The child 1 record will overwrite child 2 (below) when there at multiple records in child 1.

PS: I can of course put them side by side or in different sheets, but that’s not the layout we want here…