Add a second picture to multiple products

I want to add the same picture (as a second pic) to several products at once. Is there a way to do this without renaming the picture and uploading via ftp over and over?
Thanks!

If for a product you can just enter the same image file name

I want to add the same picture for several products though. Do I need to rename it for each product, or can I add it to several at once?
Here is the scenario:
It is for "design your own bag." One of the options is to have the bag monogrammed, and I need to add a picture of the monogram styles. They are the same for nearly a hundred bags. Do I need to re-add the photo for each bag, or can I use one image for all of the bags?

Thanks!

If I understand you correctly, you already have unique PRIMARY images for each of the bags, and you now want a SECONDARY image that is identical for all bags, and must display in addition to each bag's primary image.

There is no "hassle-free" way of doing this, and the solution will depend on where you want the image to display.

One solution is to copy the said image, and re-name it to be a sub-image of every main image - then ftp all these up to the server.

You could also do a bit of "hard coding" on tpl_product_info_display.php, where you add the URL to the said image on your server.

(Within tpl_product_info_display.php, you can adjust the layout of the components by shifting the <BOF>---<EOF> sections, so you can play around a bit with where you'd like that image to sit in relation to the other elements.)

Once you've hard-coded the file, remember to save it to the relevant custom template folder.