How can you change multiple cells simultaneously when using Solver?

When using Solver in Excel, the ability to change multiple cells simultaneously can significantly enhance efficiency, and utilizing the Ctrl key while selecting cells is the preferred method. This approach allows you to hold down the Ctrl key and click on multiple individual cells that are not contiguous, enabling you to include only those specific cells that you wish to adjust.

Typing the cell range directly is indeed a common method for defining a group of contiguous cells, but it does not allow for the selection of non-adjacent cells. Similarly, selecting an entire column may lead to unwanted changes in cells that are not intended for modification in the context of the Solver tool. On the other hand, clicking each cell one by one can be unnecessarily time-consuming, particularly when adjustments need to be made to several cells. Thus, using the Ctrl key while selecting is the most efficient approach when dealing with Solver.