Group by Aggregation

[siming]

I am working with a datatable that looks like this:

and I am trying to get to desired datatable that would like this:

or get sum of numbers and output to a new datatable that would look like this:

Can I please get some advise on how the workflow should be? What do you think is the best way to approach here?

Thanks!

[Anthony_Humphries]

Like this: Processusvierge.zip (20,2 Ko)

[siming]

Dude, it worked like magic, thank you!!