How to use Basic Level Streaming? (Not World Composition)

I want to use Level streaming instead of WC due to ability to change visibility of level, however in 4.5.1 I can’t find option to assign level to streaming volume.
Option in volume is grey out and in “set/add streaming volume to level” buttons were removed from Levels window(Or I can’t find it)

I thought this icon was “Documentation” button, but turns out it is the details! :smiley:

It is no more possible in 4.5.1 ? Did you test the Level streaming example demo with last version ?

That same thing befuddled me for quite a while. Love totally random interface stuff like that.
Glad you found it.