In a conversation with a HealthUnlocked Help person he said:
"The current changes are part of a test on mobile devices, and the member search on laptops should still be available as usual. If you're experiencing issues with this on your laptop, please let me know so I can assist further."
I still do not see it on my laptop so I notified them (no name given) so if this is the case with you let them know.
On mobile devices it is under search community