Guide

1. Inside Smartsheet's form editor, navigate to the left-side panel and select 'File Upload' under the Form Elements section.

2. Following that, go to the Field Settings pane and make your desired changes. From there, you can enter your preferred label and add a custom help text.

3. Once done, click 'Save' in the top-right corner.

4. After completing these steps, the file upload element will be added to your Smartsheet form where the intended participants can add attachments later on.