Allow access to some more photos

With the new app privacy settings, we can allow some photos accessed by the application. Also, we can trigger to allow user to select some more photos accessed by the app.
Something like "Select more photos..." shown in this image https://i.stack.imgur.com/VG7p9.jpg.

The app does not trigger this alert always. We can manually trigger this. Wondering if you can add this method call through a button on the picker. Please let us know.

Thank you.