how do i insert a table

I assume you are talking about form fields.

There is no concept of a table in a PDF file - you can add form fields that are organized in a grid that resembles a table, but you would have to do this manually.

If this is not about form fields, and you want to insert a table with static information, the best way to do this is to go back to the original application what was used to create this document (e.g. MS Word, InDesign ...).

Karl Heinz Kremer
PDF Acrobatics Without a Net
PDF Software Development, Training and More...
http://www.khkonsulting.com

As PDF is not a word processing file format (see ISO 32000) no "PDF writer" can perform word processor like activities on a PDF. That'd include inserting a table.

Be well...