Dear Zainab,  NBE will open the facility of NEET PG application form correction window to edit/modify/alter some incorrect information. The correction window will tentatively open from December 7 to 14, 2018, to allow candidates rectify the incorrect details. However, there are some fields which will be blocked for editing, while some other data can be edited. Signature is one of them. You cannot make changes to your signature. But if there is any discrepancy, the authorities will notify you through your Registered email and mobile. Then you can make the changes.