Click Add Sig to add a signature to your document. You'll need to click "+Add Witness" as one of the settings in the signature setting. With the Witness option the Invitee will be prompted to invite their own Witness to sign the document.
Other Signature options you can select at the same time are:
Invitee details (e-mail, f.name, l.name):
Enter the details of the person who is signing the document. An e-mail invitation will be sent to the e-mail address you provide so be sure it is correct!
Select between a full-signature or initials. Selecting Initials is much like initialling a paper document. When you set up your graphical signature you must provide both a full signature and your initials.
Signature capture format:
Specify whether the Invitee can use an E Signature or a scanned signature. An E Signature, whilst still legally binding, can be captured using any of Secured Signings signature capture processes. A scanned signature, however, must be a digital copy of your real signature. Some organisations require signatures to be visibly consistent with a traditional hand-written signature so they can compare how it looks to their copy on file.
Include the Invitee's Job Title with the signature.
Prompt the Invitee to provide a reason for signing to embed in to the signature.
Allow the Invitee to sign multiple pages. You specify which pages the Invitee can sign; All pages, odd pages, even pages or select specific pages.