When you select a signature field object, the Signature tab in the Object palette displays various options that control which fields (form objects) you can lock after the signature field is signed. The object types you can lock are buttons, check boxes, date/time fields, decimal fields, drop-down lists, image fields, list boxes, numeric fields, paper forms barcodes, password fields, radio buttons, other signature fields, and text fields.You can also click the Settings button to define optional security properties for the signature, such as the signature handler, signing certificates, and certificate issuers.Specifies which fields (objects) the signature applies to. The signature field can apply to all of the fields in the document, all of fields inside a collection of selected objects, or all of the fields outside of a collection of selected objects. After the signing party signs the signature field, the fields in the specified area are locked. This option is selected be default when you add a signature field to a form design. If you deselect this option, none of the fields in the form will be locked after the signing party signs the signature field.You can select one of options in the drop-down list to indicate which fields to lock or to manage collections.