Per-product availability
The Products tab lists your catalogue with a toggle for delivery and a toggle for pickup. Turn delivery off for anything you will not put in a van, and the cart stops offering it as a delivery option.
A product added after you installed the app gets its settings row the moment you create it, so new items are covered without a refresh.
Per-product and per-tag rules
Some items need their own schedule. A frozen line may need an earlier cutoff than the rest of the order; a two-person delivery may need a longer prep time.
Per-product and per-tag rules let you set those separately, so the picker offers only the days that suit everything in the cart. Available on the Growth plan.
Large catalogues
Product settings past the first 1,000 products used to be dropped. That is fixed, but if you have a very large catalogue it is worth spot-checking a product near the end of the list after a bulk change.