Orders stops are grouped by Accounts. If you have multiple orders from different accounts at the same location, the orders will be grouped by accounts.
Troubleshooting the stop grouping
1) Verify in the Account order profile if you are grouping on Address Line 1 or Address Line 1 and 2.
2) Verify if ID verification and/or a COD is requested on the order. If at least one of the option is set, the delivery stops will not be grouped as they need to be done individually.
3) If one or more of the reference fields are setup to be updatable by the driver and are setup as required for pickup/delivery/or both, the orders will not be grouped.