Any of the 3 Users (Washee, Washer and Courier) can switch to another user type within the app.
This can be done from the “more” section (shown in the image below). On the “more” section, select “Profile”, then “switch accounts” and press the “next” button.
Note: If a Washee switches to either a Washer or Courier they would be required to provide more information to be approved.