Demon Harpy in ssf. How to?

How do I spawn these monsters in Ssf?

All I can find on google is "go to chat 6666"

And also what's the best way to farm breaches in 3.19 ssf when I can't choose it on the map device?

I have my atlas fully into breach. But they spawn very rare.

Isn't it a Beyond monster?
So just get the beyond nodes in Atlas tree or roll beyond on your maps and get lucky seeing one

Yeah put beyond on things and have fast fingers - you can grab them but they disappear in a few seconds so it can take a while to acquire. I believe they only spawn as a rare which makes it a little easier to notice them.

Thanks guys. i put beyond and found one.