ECO priorities are defined in Oracle Engineering setup. Priorities are assigned to Engineering Change Orders (ECO). Priorities along with change types can control the approval workflow process.  Same ECO type can follow different approval workflow process based on ECO Priorities.

Navigation: Engineering -> Setups -> ECO Priorities

1) Priority: Enter the Priority name

2) Priority Sequence: Sequence that determines the priority.

3) Description: Priority description

4) Inactive On: End date of ECO Priority

Save the changes.

ECO Priorities