See images. Originally, both highlighted exercises were "Star Low-Plank (isometric)". In the "Edit Session" page, I changed the top one to "Side Low-Plank (weighted)", no problem. But then, when I try to also change the bottom one to the same new exercise, there's not the usual option to "Add duplicate". I can do it if I go to the "Edit Structure" page from the "Edit Session" page but it took a couple of minutes to figure that out. I assume, seeing as I can do it that way, I should be able to do it in the initial "Edit Session" page.