There are two ways in which you can refine your options when a delivery's cost is not the only consideration:
You can capture the postcode or latitude and longitude coordinates of the delivery postcode. Refer to the notes on c_pc, c_lat and c_long..
The required carrier 'service groups' have been set up in Delivery Manager (refer to Setup).
The carrier costs and charges are up to date in Delivery Manager (refer to Setup), particularly if delivering heavy items.
Each of your own stores has up to date opening times in Location Services If you are returning 'Click and Collect' options (stores without opening times will not be returned - refer to Setup).
You make a call to
GET https://dmo.metapack.com/dmoptions/find? followed by a selection of the same parameters used in Returning a range of Home Delivery Options and Returning a range of Collection Options (depending on whether your special delivery is for home delivery or pickup). However, you also use a selection of other parameters, as described in Using the built-in Allocation Engine and Creating your own Allocation Rules.