The tasks have fixed order and exact deterministic task times.

highlighted = computed this step

Task A

Task A takes 1 minute.

A=1A=1
Task timesThe fixed task order and task times are pinned before packing stations.fixed task orderminutesA1B2C3D2

Tasks B and C

Task B takes 2 minutes and task C takes 3 minutes.

B=2C=3B=2\quad C=3
Task timesThe fixed task order and task times are pinned before packing stations.fixed task orderminutesA1B2C3D2

Task D

Task D takes 2 minutes.

D=2D=2
Task timesThe fixed task order and task times are pinned before packing stations.fixed task orderminutesA1B2C3D2