You may want to edit individual objects inside a form. For example, you may have placed a PDF document inside another PDF document, and then move objects or edit the text in the placed PDF. You can do this in the same way as if you are editing regular PDF documents, for example:
to select individual objects or text segments in the form and use the Move Selection tool
to move them inside the form, indicated by a yellow border.
or Edit
Paragraph
tool to change the text in a form.