Blocking/Muting People?

Is there a way to make it so I don’t see someone’s posts and keep them from seeing mine?

There is no way to block a user but you can suppress and mute notifications from specific users here:

That being said, if you feel a user is harassing you in any way please feel free to contact any of our staff. If it is simply because you do not wish to interact with said user the above tools are the best you got.

That Ignored function looks like what I was hoping for, but I don’t seem to have it in my own Preferences menu.

Make sure to click Users on the left side.

Might be a restricted function. I would need to research it a bit more on the discourse forums as it might just be available at a certain TL or to admins/mods only