Section 105 in The Board of Secondary Education (Madhya Pradesh) Regulations, 1965
105.
Notwithstanding anything contained in these regulations the following candidates may also appear as private candidates :Candidates who has passed the examination conducted by the Board may appear at the subsequent examination of the same course in one or more subjects, and such candidate shall if successful, be entitled to a certificate of having passed the examination in the additional subject offered by him :Provided that the choice of subject or subjects is restricted to a subject or subjects of one group only:Provided also that he/she is not appearing at the full or part of any other Certificate Examination of the Board :Provided further that the candidate may not offer the same subject or subjects as had been offered by him at the previous examination at which he has passed.
