Welcome to the family of premier elements 12.
The name has been changed from sceneline to Quick mode in premier elements 12.
Actually Sceneline is gone completely. Quick view is actually more of a simplified timeline.
Personally, I much prefer it to the old sceneline. It has the advantages of a sceneline and the advantages of a timeline combined!
I wrote on the Premiere Elements 11 Quick workspace in detail
The blog post may be of interest. It is applicable to Premiere Elements 12 as well as 11.
But, now in version 12, the workspaces are
But with Guided, you work in either Quick Guided or Expert Guided.
More another time.
Please do not hestitate to ask for clarification on anything that is written.