Manage Robots globally
Go to SEO, Titles & Metas.
Browse all the tabs, and set your meta robots desired (eg: noindex, nofollow…).
If you don’t set a meta robots, the default will be index, follow.
In Advanced tab, you configure settings for your entire site.
Note that these global parameters do not override individual settings for each post.
Manage Robots individually
Edit a post, a page, or a custom post type.
In SEO metabox, in Advanced tab, set your meta robots (eg: noindex, nofollow).
Save the post.
These settings will bypass your global settings.