How to enlarge any image in a range of cells when clicking on each in Excel?

I have created an excel file for about 50 items. Each item uses a row, with several columns assigned for specific information. Then, in columns K through V, there are rather small photos for each item. One Extend Office post shows how to enlarge just one targeted cell but not a range of cells. My photos fall into the range K2 through V51. I want the user to enlarge any photo by clicking on it and then rezise it to the original on the second click. The user should not be able to change any cell data. There must be an easy way to identify such a cell range and then paste it into the VBA program already in these web pages. Any ideas? Thanks.