Duration, Work, and Units


Duration is the working time between a task's start and finish dates. For manually scheduled tasks,the duration has no significance.


Effort is the total amount of time resources will spend working on the task. Read our blog article on duration vs effort.

For manually scheduled tasks, if:

  • Allocation is in % – the total work of that task is calculated as the sum: working hours x % allocation for each resource assigned.
  • Allocation is in hours – the total work of that task is simply the sum of the individual allocations.


The total allocation (in %) for the task. If a task is allocated – Joe[100%] and Peter[50%], its allocation is 1.5.

Relationship between D, W and U
The relationship between duration, work and allocation units is critical in understanding automatic scheduling of tasks. It is explained in detail in our blog article.