Yes, your next post should be on the way to lunch. From what I'm seeing, Callie, Azai and Ruben are already available for interaction since their last posts was to wrap up their breakfast scene making them available in the lunch scene.

P.S. Old timers Erika, Jimmy and Hope are in another group hence you can't interact with them just yet. Levi is confined in the clinic (physical health). Elisa Belrose has to introduce herself before begin intractable. Isabelle, Ben and Alister are presently wrapping up their breakfast interaction.