Loading Sequence
When loading requirements specify which cargo is loaded first and which is loaded last, use loading sequence.
Loading Sequence is a relative value; the larger the value, the earlier the cargo is loaded.
For example: because A, B, C, D have different destinations, load A first, then B, finally C and D.
The Loading Sequence of A, B, C, D can be 4, 3, 2, 2.

Resulting plan:

When Loading Sequence is set, pay attention to the cross-depth setting on the Loading rules interface. See Cross depth.