A network computing system to coordinate a completion time of at least a portion of an order request with a target completion time, where the target completion time reflects an estimated time of arrival for a transportation provider with respect to a location of the supplier. The network computing system can coordinate the completion time by determining a timing of when at least a step in the preparation of at least the portion of the order request is performed by the supplier, based on an estimated arrival time of a transport provider. The network computing system can perform one or more control actions to influence the target completion time, based on the determined timing.