That depends on how you set up the catalogue and the layout is prepared for this kind of thing.
If, for example, the entire catalogue is set up with two columns, VERY clever paragraph and character styles and pinned images, it will work. If, however, you placed each product as a single element or a group of a couple of textboxes and images, it won't and you have to move everything manually.
Rian118 got a reaction from Jens Krebs in Affinity Publisher - Want to add new product to catalogue page