Custom function for get subtotals for each group in Google Sheets using Google Apps Script

You get subtotal sums for each of the selected columns.

The code speaks for itself in this post from Max Makhrov in which he shows how to create a custom function for Google Sheets to subtotal groups of columns. There is some impressive data manipulation/reshaping going on in the function and some nice use of using arrays in formula created with brackets { }. Some of the code is also written with OpenAI/ChatGPT (I’m guessing anything with a for loop). The icing on top is the conditional formatting for group totals. Follow the source link for all the code.

Source: Subtotals for each group in Google Sheets

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