A Writer user can be converted to a Reader user and a Reader user can be converted to a Writer user. To do this, go to Account Admin > Manager Users.
Next, click the edit icon for the user that you want to change and update the User role as required.
Points of note
If none of the Writer or Reader roles show in the drop down, this would suggest you don't have any available spare user licences of that user type left on your account. Contact us to request more user licences are added, or upgrade your Genovo plan.
Only Writer Owners or Reader Owners can change a user's role to be an Owner.