How Can Collaborator create New Blog Post?

How do my collaborators (clients) add a new blog post?
When I go in to editor mode, I do not see a “New” button when I go to the blog pages.

Here is my site Read-Only Link:

Thank you in advance for your help!

I figured it out. My Collections tab was hidden because my screen was too small (or my text was too big due to middle aged eyes! :nerd_face:)