I want to sale debentures

NO IT WONT WORK....IF DEBENTURES IN JOINT NAME U HAVE TO OPEN A JOINT DEMATE ACCOUNT AS WELL TO GET UR DEBENTURES IN DEMATE ACCOUNT.........HOWEVER U CAN  SELL IT IN EITHER OF NAME BUT IN THE DEMATE SLIP SIGNATURE OF BOTH WILL REQUIRE TO DELIVER DEBENTURES......

we forgot the signature, what we have done on application forms, 

so how to change the signatures,

we forgot the signature, what we have done for debentures  20 year back 

so how to change the signatures,

we forgot the signature, what we have done for debentures  20 year back 

so how to change the signatures,