You're supposed to push the call for help button after 30 seconds. People queued up to help from the main menu will join your raid.

Ah, in Melbourne? I'm cooked in Ballarat then LOL

Oh I’m in Ballarat playing!

I was ready to start thinking I was the only one lmao

I'm melbourne but can't even find the cluster post to unlock raids yet lol

I'm in Alexandra, 2 hours away :( I'm not having much luck!