Enable change/reset password on Flutter App with Azure B2c

I am trying to enable the functionality to change/reset the password in a Flutter App with Azure B2C. Changing the password should be achieved via a "change password button" on the user profile page, the password reset via "Forgot your password?" on the b2clogin.com page.

I am using flutter_appauth for the login. The user login works as expected with the following code and the user is redirected to the b2clogin.com page.

      result = await appauth.authorizeAndExchangeCode(
        AuthorizationTokenRequest(AppConfig.instance.values.clientId,
          AppConfig.instance.values.redirectUrl,
          serviceConfiguration: AuthorizationServiceConfiguration(AppConfig.instance.values.authorizationEndpoint,AppConfig.instance.values.tokenEndpoint),
          scopes: AppConfig.instance.values.scopes),
  );

But when the user clicks on "Forgot your password?", the redirection to the b2c password reset page is missing. How can I link the button to my password reset user flow?

Any ideas how I can trigger the "b2c change password" functionality with a button?

Thanks in advance

The default "forgot password" flow will throw an error back to the application. There is now a newer way to send the user directly to "forgot password" step as part of the "combined sign up and sign in" journey.

The steps to set that up are here for custom policy, and here for user flows.