You will need to try this yourself, as some branches may allow it, while others may not.
Before blocking your IOCL DC, go to the branch and submit an application with code written at the top.
Be aware that they may refuse to process it, giving stupid reasons such as not being applicable to your account, etc etc.
Do not block your IOCL DC in advance, or you may end up with no DC.
Also, do not show them the pragati dc from the official website, as it clearly states the scheme is applicable only to women.
You will embarrass yourself.