That will depend on the kind of sausage. Some sausages come pre-cooked, so all you nedd is to warm and give texture, involving a few minutes over the grill. Raw sausages, if butterfy cut will cook in ten to twenty minutes.
Firstly turn the grill on to a medium heat setting. Make sure that the sausages are thawed properly. Place the sausages onto the grill pan and put the pan into the grill. Cook for fifteen minutes, turning the sausages every five minutes to ensure that they are cooked evenly.