To create a checkbox group:

1. Go to Sign Requests or Templates as applicable.
2. Search for and select the sign request or template you want to edit.
3. Go to the PDF or Form editor view as applicable. PDF view is the default view. To learn more about forms, go here.
4. Click the checkbox you want to make part of a group.
5. Click the plus sign that appears at the bottom of the dashed, blue borders surrounding the focused checkbox. Checkboxes added this way will be grouped within the dashed, blue border.
6. Move checkboxes the same way you move other fields.