The HSTACK function is used to horizontally stack multiple ranges of data into one range. Here's how you can use it:

Let's say you have two tables in your spreadsheet, one containing sales data for the first quarter of the year and another containing sales data for the second quarter. Each table has the same columns: "Month," "Product," and "Sales."

You want to combine the data from both tables into one table that shows the sales data for the entire year. To do this, you can use the HSTACK function.

Here's how you can use the HSTACK function:

Select an empty cell where you want the combined data to appear (let's say it's cell A1). Type "=HSTACK(A2:C4,F2:H4)" into cell A1 and press enter.

In this example, the first table is located in the range A2:C4, and the second table is located in the range F2:H4. The HSTACK function stacks the second table horizontally after the first table, creating one larger table that shows the sales data for the entire year.