The ASO Manager component has methods that allow you to show the Credentials Dialog. Add a button on a form for your bot and show the dialog when clicked.
The credentials are stored in an encrypted file in the user profile of the logged in user. It is in %appdata%\Roaming\OpenSpan and is named aso.db. If you delete this file, it will get created the next time the bot is started.
Credentials are tied to the user logged in and may not be copied from one profile to another. The file will not be able to be decrypted when this happens.