For example, if your example operates on a template, then either use the template created by Create a template, or modify the template created by Create a template (eg add a field), or ...

iOS: DocuSign Ink gets rid of the hassle involved with printing, scanning, or faxing documents to sign by letting you open any document or take a picture of it with your device and securely send it.

To cut to the chase, here's how DocuSign on Zoom works to allow document signing inside online meetings. Open Zoom marketplace. Then, add DocuSign. After which, enter a Zoom meeting.

The final piece is a third-party marketplace, similar to what you see with any major software provider (e.g., Salesforce’s AppExchange, the App Store, Google Play Store, etc.).