Ga Secretary of State tells Fox Business drop boxes are legal in GA?

Brad Raffensperger is telling Fox Business That drop boxes are legal in Georgia. Fox has been silent about election integrity over the last 6 six months or so other than Tucker Carlson reporting that google and AT&T throttled bandwidth on Trump campaign websites. Many other news outlets are reporting drop boxes are illegal in Georgia. Which is it? Under the Constitution only the State legislature can make &/or change laws in Presidential Elections.