I'm trying to switch from sorting packages on local sort to moving package cars around and gassing them up. It is the same shift would just be a different position. I haven't seen any posting in the building about them needing anyone but was told they need people for it. Asked my steward and was told to write a letter of intent? I have not talked to management yet as I doubt they will let me move positions because nobody else knows the sort. My back can't handle fighting a belt without cutting it off constantly to sort packages. How does one change positions and what is a letter of intent? There are new hires being hired into easier positions and I have seniority over most part timers on my shift. Can management keep my in my position even if I have seniority and want to change positions?