Expand / Collapse Rows in Spreadsheet

Expand / Collapse Rows in Spreadsheet

I'd like to be able to collapse rows of categorized data so that I can more easily see all of the categories, with the ability to expand them to see individual rows.
When I search, I find this demo, but with no explanation of how to make it
https://docs.zoho.com/sheet/published.do?rid=mr778aae12b194b91414e9c4990cfc03e0bd5

For example, this list
Item
Style
Qty
Price
Total
Apple
Green
4
0.49
1.96
Apple
Red
9
0.35
3.15
Apple
Yellow
7
0.49
3.43
Grape
Red
100
0.05
5.00
Grape
Green
150
0.04
6.00
Total 

270

19.54

Could instead be this:
Item
Style
Qty
Price
Total
►  Apples

20

8.54
 ►  Grape

250

11.00
Total 

270

19.54

With the ability to expand like this:

Item
Style
Qty
Price
Total
▼  Apples

20

8.54
Apple
Green
4
0.49
1.96
Apple
Red
9
0.35
3.15
Apple
Yellow
7
0.49
3.43
▼  Grapes

250

11.00
Grape
Red
100
0.05
5.00
Grape
Green
150
0.04
6.00
Total 

270

19.54

This is for collaborating with our supplier. We order multiple sizes of one thing, with about 10 different things altogether, so this would help a lot in making it easier for both of us to have an overview of the order.