Section 166(iv) in Bihar Board's Miscellaneous Rules, 1958
(iv)In departmental proceedings the option of engaging a lawyer at their own cost should be allowed to gazetted officers when formal enquiries are conducted after the framing of a charge or charges against them. In the case of a non-gazetted officer, the officer conducting the enquiry should be allowed discretion whether to allow the officer concerned the option of engaging a lawyer at his own cost or not.