I am copying components from one assembly to another assembly.  What is the easiest, or preferred, way of doing it?

The issue I am having when I do a Ctrl-C from the reference assembly and Ctrl-P in the assembly I am working on, the component is not dropping in the same orientation.  And, I can only seem to copy one component.

Temporarily, I have created an assembly with both assemblies.  I have related both assemblies.  Then, I did the copy operation mentioned above.  Like I said, it is one component at a time and not in correct position.

I appreciate any help,