NIH uses activity codes (e.g. R01, F31, P50, etc.) to differentiate the wide variety of research-related programs it supports. Each type of NIH grant program has its own set of instructions and eligibility criteria.
The Principal Investigator, Authorized Representative, and Point of Contact on the application will received an email from PAMS once the proposal is ready for viewing in the system. This typically occurs after DOE has assigned a Program Manager to the application.
Resources related to proposal preparation and grant guidelines can be found on the OS website.