How Estimates (ETC) are Calculated

When you assign a resource to a task, the ETC for the task is automatically calculated.

Important! You must assign staff to tasks before you can generate, view, and edit estimates.

Allocation (%) and availability (Hours) for a resource assignment determines the ETC for the task based on the assignment start and finish dates, and is based on the following formula:

ETC = the number of working days the resource is assigned to work on the task * the number of hours each day that the resource is available for work

The calendar and daily availability for a resource is used to determine the resource's total availability. Unless you specify a different number in the resource's profile, by default 8 hours of work time are available daily for each resource is assumed.

For example, if you schedule a task between 6/30/09 and 7/30/09 and it contains 22 working days and has one resource assigned to it for 8 hours a day for all 22 days, then the task's ETC is calculated at 176 hours (22 days * 8 hours each day). If you assign two resources to the task, each with a total daily availability of 8 hours, one for 50% of the resource's available time and the other for 100%, then the combined ETC would be calculated at 264.

Note: See the Resource Management User Guide for more information.

More information:

Staff Allocations