Detection of Signature Block

Hi, I am integrating adobe sign with my Java web application. My contract document has a default signature block. AdobeSign places a signature box at the end of the document for signing and not on the signature block already present in the document.

Is there a way to make sure that the signature box appear on the signature box only and not at the bottom for single signers as well as multiple signers.

Thanks for your time. Your help is appreciated.