Activity constraint ETA

ETA is the number of working days between the constraint's last step and the start of the activity or task. The last step must be due at least that many working days before the start. A constraint is work that must be cleared before a task can be done, such as getting site access.

For example, an ETA of 5 means the constraint must be cleared at least 5 working days before the start date. An ETA of 1 means by the working day before the start.

• You can change the ETA at any time until the constraint is done.
• The ETA can be 0 to 100. The default is 1, or 0 if the due date is before the Lookahead start.
• An ETA of 0 means the task or activity can start on the same day the constraint is done.
• Changing the ETA does not move the activity start date. It changes the due dates of the constraint and its steps: raising the ETA pulls the last step's due date earlier.
• If the constraint runs late, the work cannot start earlier than the last step's due date plus the ETA.

Change the ETA

1. Double-click the constraint circle to open the constraint's detailed view.
2. Click Edit (pencil icon).
3. Change the ETA value, in days. If you enter less than 0, the app shows "Please enter the ETA more than 0".
4. Click the tick button to save. Click the cross to cancel.