With my company, it's up to the captain, & is specifically briefed as part of the approach briefing. Personally, I tend to let the pilot flying keep the controls if the weather permits breaking out into VMC 200' or more above the DH/MDA, the PNF takes over if it's less. In all cases, I brief that the PF keeps the controls until told otherwise. As someone said, I prefer having my copilot fly while I monitor, but that's chancy, as the right seat normally flies the approach, & custom dictates that seats are exchanged daily. Getting the runway lights in sight at 100' AGL at 3:00AM, & trying to transition to visual from the instruments isn't an easy thing. At minimums, I far prefer the PNF to land. But hard-and-fast rules don't enhance safety, in my opinion.