CMS Collection Settings Disabled

Hi, I want to edit by Blog CMS Collection Settings to add new blog attributes, but the option appears to be locked / grayed out. What can I do?

If there’s another developer with designer-control in the project, your options will be limited.

How can I check if that’s the case?

Are you sharing the workspace with others? You’ll see “editor” in the top right corner if you do not have full designer control. Screenshot your whole screen.