But after I've done that, how do I transmit the signed returns?  So is there a way to upload the signed 8879 form with the transmittal or does the system just consider it signed since I electronically sent them their return and 8879, they signed 8879 and sent that back to me?

Do i have to attach that signed form anywhere when I transmit the return?

Also, since they elected to let me assign them a PIN and use that method for signature of the 1040 and state returns, and since I've updated the software to have my PIN and EFIN also, then do i need to electronically go anywhere and "sign" or is it just considered signed when I transmit it?