Construction Lines Tools

Trying to understand ProStructures workflow.

1. Any vids on how the Constructions Lines are supposed to be used? I can't seem to find any SIGs on LEARN.

2. Are the CLs meant to be used for 3d modeling / placement of elements or 2d Detailing? Both?

3. When a ProStructures element is place using a Construction Line, is there a persistent associative link between the two? Ie when the CL is moved or modified, the PS element follows.