You can easily add a new stage to your prototype from the prototype's settings page.
- Log in to your account.
- Navigate to the dashboard and locate your prototype.
- Click on the prototype to which you want to add a new stage.
- Find and click on the 'Add New Stage' button.
- Enter the name of the new stage in the text field provided.
- Confirm the addition by clicking the 'Save' button or equivalent.