Industrial Engineering and Production Management
Expediting function consists in keeping a watch on

Flow of material and in case of trouble locate source of trouble
Operator's activity
Making efficient dispatching
Minimizing the delays

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Industrial Engineering and Production Management
When slack of an activity is negative

The activity is critical and any delay in its performance will delay the completion of whole project
It represents a situation where extra resources are available and the completion of project is not delayed
All of these
It represents that a programme falls behind schedule and additional resources are required to complete the project in time

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