On a hard bid, the owner supplies a bid form. On most sub bids, you write your own proposal and send it to the general contractors.
A good proposal names the drawings and addenda you priced. It lists the spec sections you cover. It lists what you exclude and what you qualify.
A door hardware supplier might write: furnish only, per section 08 71 00, installation by others. That one line prevents an argument later.
Write the proposal from your takeoff, not from memory. Check that each exclusion matches what the documents show.