Updating a CSP file within CSR Builder

Can you please detail the process for updating a .csp file within ControlSpace Remote Builder 2.0.
I’m trying to better understand:
1. How to delineate between the multiple devices that appear when a .csp file is reloaded or another .csp file is loaded.
2. What elements within a built CSR design need to be updated when a .csp file is reloaded or another .csp file is loaded.
3. How to update major properties, such as a device IP address change.

Thank you,
Paxson