You have appointed in a particular subject, say- Bengali in HONS/P.G
Now, you want to do M.A., say- in HISTORY.
** You will not get permission to do this from M.C. or D.I. with any kind of study leave etc.etc.
*** You may enhance your qualification in another subject in own interest, but the certificate will not help you.
**** At a time you will not be allowed to study in two separate degree.
Thanks a lot.