Put the handling steps where the driver will see them: add cooler or cold-chain instructions as a stop note or a saved customer note, which appear on the stop in the driver app. For steps you want confirmed, add a Driver Task — for example a required checkbox "Order kept in cooler until hand-off" or a note field — that the driver must complete before marking the stop delivered.
Saved task sets and Address Book stops let you reuse the same instructions across recurring routes. Works in both EasyRoutes for Shopify and EasyRoutes for Web.
See: Driver Tasks · Driver & Stop Notes