this is what mine looks like… at the side where the skewers points are going into that metal panel, there are little battery motors that turn the skewers slowly round and round….
There is also a similar attachment that fits along the length of the bbbq, which allows you to make ‘souvlaki’.. that is smaller skewers of meat, for putting inside pitta bread… see where the notches are? a small skewer will rest in each with its point inthe little panel with the motor.. so it turns them.. i’ll see if i can find a pic on the web.. although we dont seem able to attach images from online…