I have a spreadsheet with column headings, and I want to sort the data alphabetically by the first column. The Sort options in the Data menu are grayed out, even when I select the rows I want to sort. What do I have to do to make the Sort options available? This problem is happening in only one file; I have many other Calc documents, both single-sheet and multiple-sheet, in which the Sort options are available. I’m at a loss to find anything different about this file, but I’m hoping someone will be able to suggest a solution.
I’m using LibreOffice 126.96.36.199 (x64) on a Windows 10 PC.