I'm creating a Budget calculator spreadsheet in Google Drive, I'm trying to update cells from another Sheet with certain criteria:
This is Sheet1:
According to the date and category should update a cell from another Sheet in the same document, with the quantity.
I'm not sure If I'm able to implement this flow in the same Google spreadsheets or if I should use Python instead. I tried everything and I'm stuck here. If someone could give me a hint about it I'll appreciate it a lot.
Here's the link to the spreadsheet: https://docs.google.com/spreadsheets/d/1BEtKJGVOdVF8PLxcR_96cPjE_4XH0QFbtV9dynroly0/edit?usp=sharing


