I'm not sure about the mobile app since I'm logged in as a teacher on my phone, but if you access the website on a computer it's easy to see the link for group classes. At the top of the page, there's an easily accessible menu that includes the link. I've never taken group classes, so I can't give a specific recommendation about which teacher to select.

Hello my name is Leandro and I'm from Argentina. If you are interested in language exchange I would like to help you with Spanish. Do you like to be language partners?

Cómo te contacto, soy nuevo acá? How do i contact You?