A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
Separate names with a comma.
For me, it's now showing on the finance tab.
Seems like many of us have the same issue... See this thread for the Unity teams response: https://forum.unity.com/threads/finance.1137532/
I personally feel that removing the live stream is a step backwards.. I found it very useful. Why more notice wasn't given that this feature was...