Excel allows you to define a group of cells in preparation for doing an action, such as formatting the cells. This is different than picking a range of cells, however. A range of cells is contiguous in nature-every cell between a starting and ending point is selected. A group of cells does not need to be contiguous. Instead, they can be anywhere on the worksheet.
In some Microsoft documentation, a group of cells is called a selection set. To put together your own group of cells, you need to use the mouse. Click on the first cell in the group. As you click on each subsequent cell in the group, simply hold down the Ctrl key. Each cell you click on is added to the group. If you click on a cell a second time (with the Ctrl key pressed), the cell is removed from the group. If you click on any cell without holding down the Ctrl key, that cell is selected and the selection set is gone.
