Provision for signature

Is there anyway the provision for signature can be added to the Invoices, receipts, Payment vouchers etc so that when a printed copy is done one can easily sign it before dispatching it to the client or supplier. For example on Payment voucher we have space for
Prepared by…
Accounts Assistant

Approved by…
Internal Auditor/MD/CFO/GM

Received by…
Same as for the receipt and invoices.

use custom fields. read the guide regarding the same.

See the second example in this Guide:

Ok thanks. Got it