Triumph is very powerful and efficient in the way it allows you change the stock item image.
First, go into the Stock Item Maintenance screen, then select the stock item from the list and double click on the image box. It will say “Double Click to Select Image” if the stock item has no image associated with it to change the stock item image.
Select the required stock item image from the Triumph/Images folder and click on the “Open” button.
The selected stock item image should now be linked to the stock item.
Do note that the default recommended size for all thumbnail images for stock items, categories, stock groups and manufacturers is 160 x 160 pixels, or a similar ratio, i.e. square. Stock items can also have a more rectangular aspect but it is not recommended to go wider than 270 pixels wide x 160 pixels high or a similar ratio.