Tentative Calendar of Online CRP for RRBs & PSBs (2023-2024) RRBs –CRP RRB-XII (Office Assistants) and CRP RRB-XII (Officers) Tentative Calendar.  Candidates will be required to upload the following documents as per the specification given in the advertisement. (1) Photograph of the Applicant – 20 kb to 50 kb in .jpeg file (2) Signature of