Please look at the uploaded documents to get a better understanding on what to do. This is part of a project that needs to be done. I have also upload other parts of the project that will help in completeing the part.
DO ONLY SECTION 2.3 & 2.4
2.3. Program Architecture
This section is best completed with either a Physical DFD (SAD) or a Class Diagram (OOAD). The purpose is to define the physical architecture of the programs as they interface with each other. The diagram should include every module that will be part of the application.
2.4. Component Interfaces
Provide a screen navigation diagram and an Event chart/list. If it needs to be described by a narrative then you should provide that as well.