You will have to submit individual salary statements (including details of tax savings) and computation sheets of Income Tax to your DDO (DI/AI) within April, 2015. He/She is responsible to file the return of TAN. But your staff are responsible for filing return of their individual PAN. Anyway, your DI/AI will instruct the necessary through a meeting with the HMs/TICs district-wise/ subdivision-wise. Please contact him/her if he had already not held any such meeting.