I use H&H Color Lab.
I process each photo I'm going to use. If the ordered package includes an 8x10, I crop it to 8x10; if not, I crop it to 5x7. All of these go into 1 folder and are uploaded using H&H's EZSports software.
From there, I indicate what package (I previously set up packages in the software) for each photo, then crop each photo, if needed.
I can do one team at a time or multiple teams at the same time. The software gives the option of sorting by team, last name, first name, etc. The sorting is also done in tiers.... i.e. It will first sort by team name, then, within each of those sorts, it will sort by coach name (in case there is more than one team with the same name), then it will sort by child's name. (These are used as example - there are a multitude of things to choose from in sorting order.) It also gives me the option for the lab to pre-fill delivery envelopes with the orders. Yes, costs a few cents extra to do it. It's well worth it, IMO.