The ability to add custom fields to contracts

I would love to be able to organize my contract with the data that is above the contract to within it. Example, the name, phone, adress of client and photographer, a place to initial within the contract.

In HoneyBook I would have clients initial certain parts of the contract like digital images not included in certain session fees, etc.

I would love to be able to copy / paste from my lawyers contracts and be able to sign on the lines that they had set to sign in the document.

Apologies, I am not the best at writing so I hope this makes sense!