00:00 Slide 11: A plant with two optional lines
00:26 Slide 12: Capacity and resource data
00:53 Slide 13: Separate production from opening
01:22 Slide 14: Linking constraint: a ≤ 6yA
01:49 Slide 15: An optional minimum production level
02:18 Slide 16: Logic with binary variables
02:47 Slide 17: The complete baseline MILP
03:18 Slide 18: Verify by enumerating opening choices
03:50 Slide 19: Audit the chosen production plan
04:21 Slide 20: Choose a meaningful upper bound