Can I add signature option on Jotform?

hi there

is there a signature option, where a client could insert their signature in the case of an agreement or registration form?

You can add E-signature in your form.

Please follow this link to know more: https://www.jotform.com/help/433-How-to-Add-an-E-Signature-to-Your-Form

If you have any further query in this regard, please let us know.