Mutch depends on the structure of your database, what you intend to do with the scanned data and whether you are using a scanner that is directly connected to your computer or one that stores the scanned barcodes for later download into your computer (as you have here).
Thus, it would help for you to describe what you have/plan to do in a bit more detail.
we need to edit information about them all as a group.
In which case, maybe you need a related table where you enter the "group" information once and then link all the records represented by your scanned barcodes to this one record instead of copying the same data over and over to individual records. Which option is best depends on what kind of info you need to enter/edit about this "group".