Queries Regarding Envelope signers and Downloading the Documents

Hello,

My name is Sean I am with the Developer Support team at Docusign

1. I would take a look at conditional routing https://support.docusign.com/s/document-item?language=en_US&rsc_301&bundleId=gav1643676262430&topicId=vcu1578456483865.html&_LANG=enus, the following link shows you how you would set it up using the api: https://developers.docusign.com/docs/esign-rest-api/how-to/use-conditional-recipients/
2. You would do that using the update recipients endpoint, the properties that you require are contained within the following article: https://developers.docusign.com/docs/esign-rest-api/reference/envelopes/enveloperecipients/update/
3. You would use a template where you preset the location of the input, the following article will show you more about this https://developers.docusign.com/docs/esign-rest-api/esign101/concepts/templates/creating/  or you would use anchor tags which auto places the fields depending on the tab labels that you set the following article will show you that https://developers.docusign.com/docs/esign-rest-api/esign101/concepts/tabs/auto-place/
4. Yes as long as they aren’t deleted from the account you have access.