If you've used data validation in Excel before, you probably selected the relevant cells, clicked "Data Validation" in the ...
The ampersand symbol is a quick and easy way to combine data in Excel. To explain this method to you, I have created sample data in Excel with the names of some persons (refer to the above screenshot) ...
The best way to do this is by converting your data to an Excel table. Select your data range (A1:E11), press Ctrl + T, and click OK. Excel names it something like "Table1"; in my case, it's Table3, ...