You should be able to find it under the SEO app after activating it.

@Halimah11 We don't have the option to add do follow links. We'll consider domain white-listing and link attribution improvements in the next update.

Hi Halimah. Right now, it's not possible to change the link attribution. You might want to check the answer for this question17 for additional information.

Are you referring to "Meta Keywords" and "Meta Description" available in General Settings? These two settings are not a part of the SEO Boost app -- they are available by default.

Meta keywords36 - A set of keywords to describe what the community is all about. 

Meta description14 - This is useful to give a brief summary of the community. It might get featured on the Search Engine Result Page and impact the click-through rate.