The signer needs to know what type of notarial act they need.  Notaries aren't allowed to choose the type of notarization on a signer's  behalf. If the signer isn’t sure what notarial act is needed, they can  contact the agency that issued or is receiving the document or an  attorney for instructions. They will tell you what notarial act is  needed, and you can attach and complete the appropriate certificate  form.
A  Notary may also complete both an acknowledgment and a jurat for the  same signer on one document but signer will have to pay twice.