Attribution comes with a default set of out-of-the-box Opportunity Journey Stages:
- Opportunity Created
- Closed Lost
- Closed Won
To access these stages, from the left navigation bar, go to 
Settings > Journey > Attribution Opportunity Journey Builder. Click into each stage to see the selectors shown below for each stage.
Stage: Opportunity Created
Opportunities Created is a catch-all stage for accounts that don't qualify for any other stage. It should not have any filters.
Stage: Closed Lost
The Closed Lost stage is meant to capture opportunities that have been closed, but are not won (or did not result in any revenue).
Stage: Closed Won
The Closed Won stage is meant to capture opportunities that have been closed and are won (or resulted in revenue).
If you need help editing the stage criteria, follow the steps Edit and Publish Account Journey Stages.