First and foremost, as a manager you can help to support staff with caring responsibilities by being open to discussions about how they can better manage their work-life balance.
Keep in mind that the stages of caring can be very different, depending on the circumstances. Someone may acquire caring responsibilities suddenly, they may need to provide intermittent care (which can make it harder for them to plan when they might need time away from work), or they may need to increase the care they're carrying out on an incremental basis.