I've been with ups for about 6 months and I've been thinking about changing from the sunrise shift to twilight. I only work like 4 hrs a day in small sort and personally I don't have much to complain about but my class schedule is making it difficult to continue working so early in the morning. I feel as of though the Twilight shift would work better with me because I would atleast get a decent night sleep before school instead of only being able to be get a few hours of sleep here and there, scattered basically. I don't know how to go about on switching shifts though. Do I lose my seniority? Will I able to still work in small sort in twilight shift or would I have to work someplace else? Any general info on shift changes will be helpful, thanks.