How do I send this to the builder?

1. YourCA drafts and exports. It never sends a statutory document to a head contractor for you. No setting turns that on.
2. Every field stays editable until you sign it. The signature and witness blocks stay blank, because the signature is yours.
3. Download the document.
4. Check every figure on it.
5. Sign it.
6. Serve it through the channel you already use.
7. Then record that you served it, and the date.