The suggested socials up on the site are designed to give people opportunities to get together to socialise, even when no one is available to host them. This way we can cover key times our members want to go out and may not already have something organised.
You can claim those socials as your own and become the host or just chat with the other attendees and arrange to meet up through the chat, without anyone taking ownership of the social. Keeping it casual works just as well.
Read more on how to claim a social.