In some types of documents, you may encounter situations where certain signer fields need to be pre-filled with known information. This could include anything from a name and surname to a date of birth or driver’s license number. Additionally, certain contract details - such as the agreed-upon amount or the lease start date - are often finalized well before the document is actually signed. In such cases, it’s helpful to prepopulate specific signer fields and make them required before sending the document out for signature. Let’s take a look at a common example: a residential lease agreement between a landlord and a tenant, where we’ll pre-fill certain fields for both parties.