If you want to show all parcel lockers first at checkout regardless of which carrier they belong to, follow these steps:
Click Load current shipping methods — all your delivery methods will appear on the list automatically.
Arrange the delivery methods by dragging (:::) so that parcel lockers are at the top of the list, followed by service points, and home delivery and other options last.
Select Keep listed methods in exact order — this keeps the order exactly as you have defined it.
In the Sorting rules section, set Sort by: Distance and Direction: Ascending — this ensures that any new delivery methods not yet on the list are automatically sorted by distance to the end of the list.
Click Save advanced sorting configuration.
Please note: if you add new delivery methods later, they will not automatically appear in the correct position on the list. Remember to add them manually to the right position, for example a new parcel locker option at the top of the list among the other parcel lockers.