Excel Group feature allows users to group rows or columns. Ungroup is used to ungroup a range of cells or data that were previously grouped.

You can make Excel always open old spreadsheets in Protected View. Enable or disable Protected View using in-built setting, Group Policy, Registry.

Microsoft Excel can't map nonadjacent cells from the source spreadsheet to nonadjacent cells in a destination worksheet, however. While it has no problem linking groups of cells, nonadjacent cells ...

You can alphabetize data in an Excel spreadsheet by row or column using the "Sort" feature, or through the "Data" and "Home" tabs.

You can enable macros in Excel using the Trust Center or enable a specific macro from the security warning at the top of a spreadsheet.