IAre lawyers required to prepare Quit Claim Deeds in South Carolina, and are witnesses required other than the notary?

Preparation of a deed, whether by quit claim or warranty, is considered the practice of law in SC. A deed not prepared by a lawyer violates the rules against the unauthorized practice of law. You should have a lawyer prepare the deed. More importantly the purpose of the deed & consequences of the deed should be discussed with your lawyer for reasons that he/she can explain.