Delegation of authority for acquisitions and sales

[Joshua T.]

I am looking to form an LLC in Florida for my new real estate business. I do not live in the State, but I have a close family member who does. Since my job requires me to travel often, I would like this person to be able to make purchases and sales on behalf of my LLC. I read that a good option is setting up a delegation of authority. However, I have no idea if this is valid. Anyone in Bigger Pockets land have more experience with delegations of authority? Do you need a lawyer to set one up? Will banks and title companies recognize it?