Why I can't push 'Publish' button?

Hi, I am working on the slug for each member in CMS collection page. However it seems like I can’t push the publish button and the status is still in staged changes. I wonder what I have done something wrong. Thank you so much!

Looks to me like you are trying to publish the slug alone. Everything will publish together when you are ready. Stay in any page with no control panels open then the publish rocket will be on the top right.