No, you cannot submit a Delivery Instruction Slip (DIS) at a Zerodha branch office. You must courier the DIS, along with a hard copy of the Client Master Report (CMR) from the other broker, to the following address:
Zerodha Customer Support Centre
#192A, 4th Floor, Kalyani Vista
3rd Main Road, JP Nagar 4th Phase
Bengaluru 560076