Assemble vs Assembly View

I’ve been ignoring these functions for a while, but I was trying to understand them now. After reading the documentation of Bambu Studio, I still do not fully understand. I know on fusion/inventor/solidworks you have assemblies that are composed by many parts with rules to be together (static:face,point,etc or dynamic ones:slider,axis,etc).

What about the options in BambuStudio?
1) What is the difference of the Assemble vs Assembly view?
2) When making multiple rules to assemble, i.e. 3 parts, should those parts be grouped together?